Alex Mustard / Striped mackerel (Rastrelliger kanagurta) shoal swimming with open mouths, filtering for zooplankton. Marsa Shouna, Port Ghalib, Marsa Alam, Egypt. Red Sea

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

Wild Wonders of Europe / Roggo / European grayling (Thymallus thymallus) alevin, 18 days, feeding on zooplankton, from Lake Thun, Switzerland, captive, April 2009

Wild Wonders of Europe / Roggo / European grayling (Thymallus thymallus) alevin, 13 days, feeding on zooplankton, from Lake Thun, Thun, Switzerland, captive, April 2009 Wild Wonders kids book.

Solvin Zankl / Close up of head of Deepsea amphipod Pram bug {Phronima sp} adult, Atlantic ocean

Solvin Zankl / Anomuran larva of a Hermit crab, Atlantic ocean

Solvin Zankl / Marine Planktonic Copepod {Gaussia princeps} female, deepsea, Atlantic ocean

Solvin Zankl / Deepsea smelt {Bathylagus antarcticus}, found in all the southern oceans as far south as Antarctica, from the surface to depths of 4,000 m, Atlantic ocean

Solvin Zankl / Atlantic longarm octopus (Octopus defilippi), Atlantic ocean

Solvin Zankl / Deepsea marine planktonic Copepod {Euchirella sp} Atlantic ocean

Solvin Zankl / Sea butterfly {Clio recurva} (a thecosomate pteropod), Atlantic ocean