Alex Mustard / 2020VISION / Basking shark (Cetorhinus maximus) feeding at the surface in a thick soup of copepod zooplankton (Calanus finmarchicus), Cairns of Coll, Inner Hebrides, Scotland, UK, June

Alex Mustard / 2020VISION / Male Lumpsucker (Cyclopterus lumpus) covered in fluorescent pink copepod parasites, this male was guarding eggs, Babbacombe Bay, Devon, UK, March

Stephen Dalton / Cyclops (Copepoda) female carrying two parcels of eggs. UK, November.

Doug Perrine / Dorsal fin of Bryde's whale (Balaenoptera brydei / edeni) with copepod parasite near tip, off Cabo San Lucas, Baja California, Mexico (Eastern Pacific Ocean)

David Shale / Pelagic copepod {Saphirrina sp} caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Pelagic copepod {Saphirrina sp} caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Pelagic copepod {Saphirrina sp} caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Pelagic copepod {Saphirrina sp} caught with 1m ring net between 0 and 150m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea copepods, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea copepod, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea copepod caught between 2357 and 2533m, Mid-Atlantic Ridge, North Atlantic Ocean

David Shale / Deepsea copepod at 0-159m, Mid-Atlantic Ridge, North Atlantic Ocean