Ingo Arndt / Researcher preparing "Bongo" net for sampling zooplankton on Expedition ship, Polarstern, Weddell Sea, Antarctica

Jurgen Freund / Jo Browne and Kade Mills use a cylinder cone shaped plankton net to sample gelatinous zooplankton for Coral Reef census, Lizard Island, Queensland, Australia, April 2008. Not released

Juergen Freund / Large 2-cone plankton net behind research vessel (researchers from Central Queensland University, Rockhampton). Queensland, Australia

Ingo Arndt / Scientist, Jan Michels, from Alfred Wegener Institute, pulling up a "Bongo" net for sampling zooplankton on Expedition ship, Polarstern, Weddell Sea, Antarctica

Solvin Zankl / Scientists lowering plankton net to investigate marine microplastics, from Corwith Cramer, a 134-foot steel brigantine. Sargasso Sea, Bermuda, April 2014.

Alex Hyde / Scientist using plankton net to survey marine fauna. Isle of Mull, Scotland, UK, June 2013.

Alex Hyde / Scientist using plankton net to survey marine fauna. Isle of Mull, Scotland, UK, June.

Alex Hyde / Sample of marine flora collected with a plankton net, including Sea-gooseberry (Pleurobrchia pileus) and Rathkea sp. Isle of Mull, Scotland, UK. June.

Birgitte Wilms / Spotted Anemone Crab (Neopetrolisthes maculatus) feeding feeding on plankton with feather net arms, Solomon Islands

Juergen Freund / Jo Browne and Kade Mills use a cylinder cone plankton net to sample gelatinous zooplankton for Coral Reef census, Lizard Island, Queensland, Australia, April 2008

Juergen Freund / Jo Browne and Kade Mills use a cylinder cone plankton net to sample gelatinous zooplankton for Coral Reef census, Lizard Island, Queensland, Australia, April 2008

Solvin Zankl / Net for sampling plankton at the water's surface, RV Polarstern operated by the Alfred Wegener Institute for polar and marine research, Atlantic ocean