Hompage ABOUT THE INSTITUTE Organization Laboratory for Plankton and Shellfish Toxicity

Sanda Skejić

Title

PhD

E-mail

Phone number

021408015

Department

Laboratory of Plankton and Shellfish toxicity

About

EMPLOYMENT

Scientific adviser in the field of natural sciences, biology for the Laboratory of Plankton and Shellfish toxicity.

WORK AREA

My primary scientific activity work is focused on the study of the ecology and taxonomy of marine phytoplankton with special emphasis on the group of nanoplankton calcite organisms- coccolithophores, toxic species of phytoplankton on shellfish farms and their impact on human health, as well as phytoplankton ecology in trophically loaded systems (fish farms).

Professional experience

2020.

Participant of the project ASSAMBLE+ (International cooperation with the institute Stazione Zoologica Anton Dohrn, Naples, Italy)

2019.

A course on marine research within the international conventions of the United Nations and the law of the sea (United Nations Convention on the Law of the Sea), Oostende, Belgium

2017.

International proficiency test for taxonomic determination of phytoplankton organized by the Institute of Marine Research in Galway and Harmful Algae Communication Center in Denmark

2015.

Advanced course in APC11 phytoplankton taxonomy and systematics, Stacione Zoologica Anton Dohrn, Naples, Italy

(passed the final exam)

2014.

Course ”Challenge for Good Environmental Status in Coastal Waters” (within the PERSEUS project), organized by the Shirshow Institute of Oceanology, Russian Academy of Science, Gelendzhik, Russia.

2014.

A course of theoretical and practical knowledge on ballast water sampling and monitoring according to the ballast water convention (within the BALMAS project), organized by the Institute of Waters of the Republic of Slovenia, Marine Biological Station, Piran, Slovenia

2012.

Participant of the project ASSAMBLE: Changes within microbial loop components in the presence of harmful phytoplankton bloom (MICROHAB). International cooperation with the ARAGO Laboratory, Banyuls sur Mer, France

2007.

IOC Harmful Microalgae Identification and Quantification Course, Harmful Algae Communication Center in Denmark, University of Copenhagen, Denmark.

Certificate: IOC CERTIFICATE OF PROFICIENCY IN IDENTIFICATION OF HARMFUL ALGAE

2007.

International workshop on methods for determining plankton production within the FP6 SESAME Project. HCMR, Anavissos, Greece

2003.

UNEP course on eutrophication, Centro Ricerche Marine, Cesenatico, Italy

Education

2009.

PhD in Biology

Faculty of Science, University of Zagreb

2004.

Master’s degree in the field of Geoscience, Oceanology

Faculty of Science, University of Zagreb

1997.

Prof. Biology and Chemistry

Faculty of Science, University of Split

Publications

Publikacije

Ćatipović, Leon and Sathyendranath, Shubha and Matić, Frano and Kovač, Žarko and Kovačić, Luka and Gladan, Živana Ninčević and Skejić, Sanda and Kalinić, Hrvoje

Sources of uncertainty in satellitederived chlorophylla concentrationAn Adriatic Sea case study

Published

2024

DOI

ISBN

10.1016/j.jag.2024.103727

Publikacije

Skejić S, Milić Roje B, Matić F, Arapov J, Francé J, Bužančić M, Bakrač A, Straka M, Ninčević Gladan Ž

Phytoplankton Assemblage over a Year Period in the Adriatic Sea Patterns and Trends

Published

2024

DOI

ISBN

10.3390/biology13070493

Publikacije

Michele Giani, Alexandra Pavlidou, Martina Kralj, Ioanna Varkitzi, Angel Borja, Iratxe Menchaca, Marina Lipizer, Elena Partescano, Lidia Urbini, Janja Francé, Erika Magaletti, Alessandra Nguyen Xuan, Pasquale Lanera, Sanda Skejić, Damir Ivanković, Živana Ninčević Gladan, Slavica Matijević, Maria Pantazi, Kalliopi Pagou

Assessment of the eutrophication status at Mediterranean subbasin scale within the European Marine Strategy Framework Directive

Published

2024

DOI

ISBN

10.1016/j.scitotenv.2024.173876

Publikacije

Paramana T, Dassenakis M, Bassan N,Dallangelo C, Campostrini P. ..., Pavičić M, Skejić S, Vidjak O and others

Achieving coherence between the Marine Strategy Framework Directive and the Maritime Spatial Planning Directive

Published

2023

DOI

ISBN

10.1016/j.marpol.2023.105733

Publikacije

Arapov J, Tomašević T, Bonačić T, Pejković M, Bužančić M, Bušelić I, Lepen Pleić I, Casabianca S, Penna A, Skejić S, Ninčević Gladan Ž

A new insight into the taxonomy of Pseudonitzschia genus from the Adriatic Sea Description of P brasiliana P galaxiae P hasleana and P linea

Published

2023

DOI

ISBN

10.3390/jmse11071370

Publikacije

Godrijan J, Arapov J, Skejić S, Bužančić M

Back to Basics Revision of Coccolithophore Species List in the Adriatic Sea

Published

2023

DOI

ISBN

10.3390/w15030603

Publikacije

Vrdoljka Tomaš A, Šantić D, Šolić M, Skejić S, Milinković A, Kušan Cvitešić A, Gašparović B, Šestanović S, Stefanija, Frka S

How do open coastal fire episodes impact sea surface microlayer neuston communities

Published

2023

DOI

ISBN

10.1016/j.scitotenv.2022.160593

Publikacije

Milinković A, Penezić A, Cvitešić Kušan A, Gluščić V, Žužul S, Skejić S, Šantić D, Godec R, Pehnec G, Omanović D, Engel A, Frka S

Variabilities of biochemical properties of the sea surface microlayer Insights to the atmospheric deposition impacts

Published

2022

DOI

ISBN

10.1016/j.scitotenv.2022.156440

Publikacije

Skejić S, Arapov J, Bužančić M, Ninčević Gladan Ž, Bakrač A, Straka M, Mandić J

First evidence of an intensive bloom of the coccolithophore Syracosphaera halldalii in a highly variable estuarine environment Krka River Adriatic sea

Published

2021

DOI

ISBN

10.1111/maec.12641

Publikacije

Francé J, Varkitzi I, Stanca E, Cozzoli F, Skejić S, Ungaro N, Vascotto I, Mozetič P, Ninčević Gladan Ž, Assimakopoulou G, Pavlidou S, Zervoudaki S, Pagou K, Basset A

Large scale testing of phytoplankton diversity indices for environmental assessment in Mediterranean sub regions Adriatic Ionian and Aegean Seas

Published

2021

DOI

ISBN

10.1016/j.ecolind.2021.107630

Publikacije

Arapov J, Bužančić M, Penna A, Casabianca S, Capellacci S, Andreoni F, Skejić S, Bakrač A, Straka M, Mandić J, Ninčević Gladana Ž

High proliferation of Pseudo nit schia cf arenysensis in the Adriatic Sea ecological and morphological characterisation

Published

2020

DOI

ISBN

10.12681/mms.22932

Publikacije

Arapov J, Bužančić M, Skejić S, Mandić J, Bakrač A, Straka M, Ninčević Gladan Ž

Phytoplankton Dynamics in the Middle Adriatic Estuary with a Focus on the Potentially Toxic Genus Pseudo nit schia

Published

2020

DOI

ISBN

10.3390/jmse8080608

Publikacije

Arapov J, Ujević I, Straka M, Skejić S, Bužančić M, Bakrač A, Ninčević Gladan Ž

First evidence of domoic acid production in Pseudo nit schia calliantha cultures from the central Adriatic Sea

Published

2020

DOI

ISBN

10.32582/aa.61.2.2

Publikacije

Young JR, Arapov J, Skejić S, Bakrač A, Bužančić M, Triantaphyllou MV

Verification of the lifecycle of Helicosphaera pavimentum and discussion of the identity of Syracolithus dalmaticus

Published

2020

DOI

Publikacije

Ninčević Gladan Ž, Matić F, Arapov J, Skejić S, Bužančić M, Bakrač A, Straka M, Dekneudt Q, Grbec B, Garber R, Nazlić N

The relationship between toxic phytoplankton species occurrence and environmental and meteorological factors along the Eastern Adriatic coast

Published

2020

DOI

ISBN

10.1016/j.hal.2020.101745

Publikacije

Ninčević Gladan Ž, Arapov J, Casabianca S, Penna A, Honsell G, Brovedani V, Pelin M, Tartaglione L, Sosa S, Dell'Aversano C, Tubaro A, Žuljević A, Grbec B, Čavar M, Bužančić M, Bakrač A, Skejić S

Massive Occurrence of the Harmful Benthic Dinoflagellate Ostreopsis cf ovata in the Eastern Adriatic Sea

Published

2019

DOI

ISBN

10.3390/toxins11050300

Publikacije

Tsiamis K, Palialexis A, Stefanova K, Ninčević Gladan Ž, Skejić S, Despalatović M, Cvitković I, Dragičević B, Dulčić J, Vidjak O, Bojanić N, Žuljević A, Aplikioti M, Argyrou M, Josephides M, Michailidis N, Jakobsen HH, Staehr PA, Ojaveer H, Lehtiniemi M, Massé C, Zenetos A, Castriota L, Livi S, Mazziotti C, Schembri PJ, Evans J, Bartolo AG, Kabuta SH, Smolders S, Knegtering E, Gittenberger A, Gruszka P, Kraśniewski W, Bartilotti C, Tuaty-Guerra M, Canning-Clode J, Costa AC, Parente MI, Botelho AZ, Micael J, Miodonski JV, Carreira GP, Lopes V, Chainho P, Barberá C, Naddafi R, Florin AB, Barry P, Stebbing PD, Cardoso AC

Nonindigenous species refined national baseline inventories A synthesis in the context of the European Unions Marine Strategy Framework Directive

Published

2019

DOI

ISBN

10.1016/j.marpolbul.2019.06.012

Publikacije

Mozetič P, Cangini M, Francé J, Bastianini M, Bernardi Aubry F, Bužančić M, Cabrini M, Cerino F, Čalić M, D'Adamo R, Drakulović D, Finotto S, Fornasaro D, Grilli F, Kraus R, Kužat N, Marić Pfannkuchen D, Ninčević Gladan Ž, Pompei M, Rotter A, Servadei I, Skejić S

Phytoplankton diversity in Adriatic ports Lessons from the port baseline survey for the management of harmful algal species

Published

2019

DOI

ISBN

10.1016/j.marpolbul.2017.12.029

Publikacije

Skejić S, Arapov J, Kovačević V, Bužančić M, Bensi M, Giani M, Bakrač A, Mihanović H, Ninčević Gladan Ž, Urbini L, Grbec B

Coccolithophore diversity in open waters of the middle Adriatic Sea in pre and post winter periods

Published

2018

DOI

ISBN

10.1016/j.marmicro.2018.07.006

Publikacije

Varkitzi I, Basset A, Cozzoli F, Stanca E, Zervoudaki S, Giannakourou A, Assimakopoulou G, Venetsanopoulou A, Mozetič P, Tinta T, Skejić S, Vidjak O, Cadiou JF, Pagou K

Pelagic habitats in the Mediterranean Sea A review of Good Environmental Status GES determination for plankton components and identification of gaps and priority needs to improve coherence for the MSFD implementation

Published

2018

DOI

ISBN

10.1016/j.ecolind.2018.07.036

Publikacije

Arapov J, Skejić S, Bužančić M, Bakrač A, Vidjak O, Bojanić N, Ujević I, Ninčević Gladan Ž

Taxonomical diversity of Pseudonitzschia from the Central Adriatic Sea

Published

2017

DOI

ISBN

10.1111/pre.12184

Publikacije

Bužančić M, Arapov J, Bakrač A, Ninčević Gladan Ž, Skejić S

Morphological characterization of Skeletonema grevillei Bacillariophyta Thalasiosirales in the eastern Adriatic Sea

Published

2017

DOI

Publikacije

Skejić S, Car A, Marasović I, Jozić S, Bužančić M, Arapov J, Ninčević Gladan Ž, Bakrač A, Kušpilić G, Vidjak O, Larsen J

Morphology and ecology of the poorly known dinoflagellate Prorocentrum arcuatum Dinophyceae from the Medulin Bay eastern Adriatic Sea

Published

2017

DOI

Publikacije

Hummel H, Van Avesaath P, Wijnhoven S, Kleine-schaars L, Degraer S, Kerckhof F, Bojanić N, Skejić S, Vidjak O, Maria Rousou M, Orav-Kotta H, Kotta J, Jourde J, Pedrotti ML, Leclerc JC, Simon N, Rigaut-Jalabert F, Bachelet G, Lavesque N, Arvanitidis C, Pavloudi C, Faulwetter S, Crowe T, Coughlan J, Benedetti-Cecchi L, Dal Bello M, Magni P, Como S, Coppa S, Ikauniece A, Ruginis T, Jankowska E, Weslawski JM, Warzocha J, Gromisz S, Witalis B, Silva T, Ribeiro P, Kirienko Fernandes de Matos V, Sousa-Pinto I, Veiga P, Troncoso J, Guinda X, de la Pena JA, Puente A, Espinosa F, Pérez-Ruzafa A, Frost M, Mcneill CL, Peleg O, Rilov G

Geographic patterns of biodiversity in European coastal marine benthos

Published

2017

DOI

ISBN

10.1017/S0025315416001119

Publikacije

Vidjak O, Bojanić N, Ninčević Gladan Ž, Skejić S, Grbec B

First record of small tropical calanoid copepod Parvocalanus crassirostris Copepoda Calanoida Paracalanidae in the Adriatic Sea

Published

2016

DOI

ISBN

10.12681/mms.1743

Publikacije

Ninčević-Gladan Ž, Bužančić M, Kušpilić G, Grbec B, Matijević S, Skejić S, Marasović I, Morović M

The response of phytoplankton community to anthropogenic pressure gradient in the coastal waters of the eastern Adriatic Sea

Published

2015

DOI

ISBN

10.1016/j.ecolind.2015.03.018

Publikacije

Arapov J, Ujević I, Ninčević Gladan Ž, Skejić S, Ceredi A, Milandri A, Pigozzi S, Riccardi E, Vilar-González A, Luisa Rodríguez-Velasco M, Nazlić N, Marasović I

Shellfish lipophilic toxin profile and toxic phytoplankton species along eastern Adriatic coast

Published

2015

DOI

Publikacije

Skejić S, Vilibić I, Matijević S, Jozić S, Ninčević Gladan Ž, Morović M, Marasović I, Prelesnik H

Longterm regulating mechanisms of phytoplankton biomass in a traditional shellfish aquaculture area

Published

2015

DOI

Publikacije

Čustović S, Orhanović S, Skejić S, Pavela-Vrančić M

The predominant occurrence of YTX in the Easternmid Adriatic sea Vranjic basin Croatia

Published

2014

DOI

Publikacije

Skejić S, Bojanić N, Matijević S, Vidjak O, Grbec B, Ninčević Gladan Ž, Šestanović S, Šantić D

Analysis of the phytoplankton community in the vicinity of domestic sewage outflow during stratified conditions

Published

2014

DOI

ISBN

10.12681/mms.866

Publikacije

Skejić S, Ninčević Gladan Ž, Ezgeta-Balić D, Peharda M

Differences in phytoplankton accumulation between Mediterranean mussel Mytilus galloprovincialis Lamarck and European flat oyster Ostrea edulis Linneaus after natural exposure to toxic Dinophysis bloom

Published

2012

DOI

Publikacije

Vidjak O, Bojanić N, Matijević S, Kušpilić G, Ninčević Gladan Ž, Skejić S, Grbec B, Brautović I

Environmental drivers of zooplankton variability in the coastal eastern Adriatic Mediterranean Sea

Published

2012

DOI

Publikacije

Skejić S, Marasović I, Ninčević Gladan Ž

Phytoplankton assemblages at fish farm in Maslinova bay the Island of Brač

Published

2012

DOI

Publikacije

Skejić S, Marasović I, Vidjak O, Kušpilić G, Ninčević Gladan Ž, Šestanović S, Bojanić N

Effects of cage fish farming on phytoplankton community structure biomass and primary production in an aquaculture area in the middle Adriatic Sea

Published

2011

DOI

ISBN

10.1111/j.1365-2109.2010.02733.x

Publikacije

Davenport J, Ezgeta-Balić D, Peharda M, Skejić S, Ninčević-Gladan Ž, Matijević S

Sizedifferential feeding in Pinna nobilis L Mollusca Bivalvia exploitation of detritus phytoplankton and zooplankton

Published

2011

DOI

ISBN

10.1016/j.ecss.2010.12.033

Publikacije

Ninčević Gladan Ž, Ujević I, Milandri A, Marasović I, Ceredi A, Pigozzi S, Arapov J, Skejić S

Lipophilic Toxin Profile in Mytilus galloprovincialis during Episodes of Diarrhetic Shellfish Poisoning DSP in the NE Adriatic Sea in

Published

2011

DOI

ISBN

10.3390/molecules16010888

Publikacije

Ujević I, Ninčević-Gladan Ž, Roje R, Skejić S, Arapov J, Marasović I

Domoic acid a new toxin in the Croatian Adriatic shellfish toxin profile

Published

2010

DOI

ISBN

10.3390/molecules15106835

Publikacije

Ninčević Gladan Ž, Ujević I, Milandri A, Marasović I, Ceredi A, Pigozzi S, Arapov J, Skejić S, Orhanović S, Isajlović I

Is Yessotoxin the Main Phycotoxin in Croatian Waters

Published

2010

DOI

ISBN

10.3390/md8030460

Publikacije

Matijević S, Kušpilić G, Morović M, Grbec B, Bogner D, Skejić S, Veža J

Physical and chemical properties of the water column and sediments at sea basssea bream farm in the middle Adriatic Maslinova Bay

Published

2009

DOI

Publikacije

Ninčević Gladan Ž, Marasović I, Grbec B, Skejić S, Bužančić M, Kušpilić G, Matijević S, Matić F

Interdecadal variability in phytoplankton community in the Middle Adriatic Kaštela Bay in relation to the North Atlantic Oscillation

Published

2009

DOI

ISBN

10.1007/s12237-009-9223-3

Publikacije

Ninčević-Gladan Ž, Skejić S, Bužančić M, Marasović I, Arapov J, Ujević I, Bojanić N, Grbec B, Kušpilić G, Vidjak O

Seasonal variability in Dinophysis spp abundances and diarrhetic shellfish poisoning outbreaks along the eastern Adriatic coast

Published

2008

DOI

Publikacije

Marasović I, Ninčević Gladan Ž, Skejić S, Grbec B, Bužančić M, Ujević I

Temporal distribution of Dinophysis spp in relation to diarrhetic shellfish poisoning shellfish toxicity

Published

2007

DOI

ISBN

10.1504/IJENVH.2007.017873

Publikacije

Ninčević Gladan Ž, Skejić S, Marasović I, Žuljević A

First Record of Ceratoperidinum yeye in the Adriatic Sea

Published

2006

DOI

Publikacije

Tičina V, Katavić I, Dadić V, Marasović I, Kršinić F, Grbec B, Kušpilić G, Cetinić P, Ninčević Ž, Matić Skoko S, Franičević M, Soldo A, Vidjak O, Emrić Tičina V, Bojanić D, Skejić S, Matić F

Acoustic estimates of small pelagic fish stocks in the eastern part of the Adriatic Sea

Published

2006

DOI

Publikacije

Marasović I, Ninčević Ž, Kušpilić G, Marinović S, Marinov (Skejić) S

Longterm changes of basic biological and chemical parameters at two stations in the middle Adriatic

Published

2005

DOI

Publikacije

Ninčević Gladan Ž, Marasović I, Kušpilić G, Marinović S, Skejić S

A mucilaginous diatom bloom in the middle Adriatic

Published

2004

DOI

Publikacije

Skejić S, Ninčević Gladan Ž, Marasović I

Pseliodinium vaubanii an organism introduced into the Adriatic sea by ballast waters

Published

2004

DOI

Sanda Skejić

About

EMPLOYMENT

WORK AREA

Professional experience

Education

Publications

Sources of uncertainty in satellitederived chlorophylla concentrationAn Adriatic Sea case study

Phytoplankton Assemblage over a Year Period in the Adriatic Sea Patterns and Trends

Assessment of the eutrophication status at Mediterranean subbasin scale within the European Marine Strategy Framework Directive

Achieving coherence between the Marine Strategy Framework Directive and the Maritime Spatial Planning Directive

A new insight into the taxonomy of Pseudonitzschia genus from the Adriatic Sea Description of P brasiliana P galaxiae P hasleana and P linea

Back to Basics Revision of Coccolithophore Species List in the Adriatic Sea

How do open coastal fire episodes impact sea surface microlayer neuston communities

Variabilities of biochemical properties of the sea surface microlayer Insights to the atmospheric deposition impacts

First evidence of an intensive bloom of the coccolithophore Syracosphaera halldalii in a highly variable estuarine environment Krka River Adriatic sea

Large scale testing of phytoplankton diversity indices for environmental assessment in Mediterranean sub regions Adriatic Ionian and Aegean Seas

High proliferation of Pseudo nit schia cf arenysensis in the Adriatic Sea ecological and morphological characterisation

Phytoplankton Dynamics in the Middle Adriatic Estuary with a Focus on the Potentially Toxic Genus Pseudo nit schia

First evidence of domoic acid production in Pseudo nit schia calliantha cultures from the central Adriatic Sea

Verification of the lifecycle of Helicosphaera pavimentum and discussion of the identity of Syracolithus dalmaticus

The relationship between toxic phytoplankton species occurrence and environmental and meteorological factors along the Eastern Adriatic coast

Massive Occurrence of the Harmful Benthic Dinoflagellate Ostreopsis cf ovata in the Eastern Adriatic Sea

Nonindigenous species refined national baseline inventories A synthesis in the context of the European Unions Marine Strategy Framework Directive

Phytoplankton diversity in Adriatic ports Lessons from the port baseline survey for the management of harmful algal species

Coccolithophore diversity in open waters of the middle Adriatic Sea in pre and post winter periods

Pelagic habitats in the Mediterranean Sea A review of Good Environmental Status GES determination for plankton components and identification of gaps and priority needs to improve coherence for the MSFD implementation

Taxonomical diversity of Pseudonitzschia from the Central Adriatic Sea

Morphological characterization of Skeletonema grevillei Bacillariophyta Thalasiosirales in the eastern Adriatic Sea

Morphology and ecology of the poorly known dinoflagellate Prorocentrum arcuatum Dinophyceae from the Medulin Bay eastern Adriatic Sea

Geographic patterns of biodiversity in European coastal marine benthos

First record of small tropical calanoid copepod Parvocalanus crassirostris Copepoda Calanoida Paracalanidae in the Adriatic Sea

The response of phytoplankton community to anthropogenic pressure gradient in the coastal waters of the eastern Adriatic Sea

Shellfish lipophilic toxin profile and toxic phytoplankton species along eastern Adriatic coast

Longterm regulating mechanisms of phytoplankton biomass in a traditional shellfish aquaculture area

The predominant occurrence of YTX in the Easternmid Adriatic sea Vranjic basin Croatia

Analysis of the phytoplankton community in the vicinity of domestic sewage outflow during stratified conditions

Differences in phytoplankton accumulation between Mediterranean mussel Mytilus galloprovincialis Lamarck and European flat oyster Ostrea edulis Linneaus after natural exposure to toxic Dinophysis bloom

Environmental drivers of zooplankton variability in the coastal eastern Adriatic Mediterranean Sea

Phytoplankton assemblages at fish farm in Maslinova bay the Island of Brač

Effects of cage fish farming on phytoplankton community structure biomass and primary production in an aquaculture area in the middle Adriatic Sea

Sizedifferential feeding in Pinna nobilis L Mollusca Bivalvia exploitation of detritus phytoplankton and zooplankton

Lipophilic Toxin Profile in Mytilus galloprovincialis during Episodes of Diarrhetic Shellfish Poisoning DSP in the NE Adriatic Sea in

Domoic acid a new toxin in the Croatian Adriatic shellfish toxin profile

Is Yessotoxin the Main Phycotoxin in Croatian Waters

Physical and chemical properties of the water column and sediments at sea basssea bream farm in the middle Adriatic Maslinova Bay

Interdecadal variability in phytoplankton community in the Middle Adriatic Kaštela Bay in relation to the North Atlantic Oscillation

Seasonal variability in Dinophysis spp abundances and diarrhetic shellfish poisoning outbreaks along the eastern Adriatic coast

Temporal distribution of Dinophysis spp in relation to diarrhetic shellfish poisoning shellfish toxicity

First Record of Ceratoperidinum yeye in the Adriatic Sea

Acoustic estimates of small pelagic fish stocks in the eastern part of the Adriatic Sea

Longterm changes of basic biological and chemical parameters at two stations in the middle Adriatic

A mucilaginous diatom bloom in the middle Adriatic

Pseliodinium vaubanii an organism introduced into the Adriatic sea by ballast waters

Other