Shane Gross / Larval flounder (possibly Laeops Kitahara) in the open ocean at night off Anilao, Philippines.

Shane Gross / Larval flounder (possibly Laeops Kitahara) in the open ocean at night off Anilao, Philippines.

Sue Daly / Flounder (Platichthys flesus), Trondheimsfjord, Norway, July.

Sue Daly / Flounder (Platichthys flesus), Trondheimsfjord, Norway, July.

MYN / Paul van Hoof / European Flounder (Platichthys flesus) The Netherlands, March, Meetyourneighbours.net project

Sue Daly / Flounder (Platichthys flesus) St Abbs Voluntary Marine Reserve, Scotland (North Sea).

Alex Hyde / Juvenile European Flounder (Platichthys flesus) camouflaged against silty estuarine sediment. The River Tweed, Berwick-upon-Tweed, Northumberland, UK. May. Photographed in mobile field studio.

Alex Hyde / Three juvenile European Flounders (Platichthys flesus) camouflaged against silty estuarine sediment. The River Tweed, Berwick-upon-Tweed, Northumberland, UK. May. Photographed in mobile field studio.

Alex Hyde / Juvenile European Flounder (Platichthys flesus) photographed in mobile field studio. The River Tweed, Berwick-upon-Tweed, Northumberland, UK. May.

Alex Hyde / Juvenile European Flounder (Platichthys flesus) photographed in mobile field studio. The River Tweed, Berwick-upon-Tweed, Northumberland, UK. May.

Jussi Murtosaari / European flounder (Platichthys flesus) young fish hidden to sand, in aquarium, Aland Islands, Finland, August.

Franco Banfi / Flounder (Platichthys flesus) resting on seabed, Lofoten Islands, Norway, Atlantic Ocean.

Alex Mustard / Portrait of a Flounder (Platichthys flesus) on the seabed. Fort William, Lochaber, The Highlands, Scotland, United Kingdom. Loch Linnhe, North East Atlantic Ocean. British Isles

Martin Camm / Carwardine / Humpback whale (Megaptera novaeangliae) Underside of tail (fluke) comparisons No more than 15 illustrations by Martin Camm, Rebecca Robinson and/or Toni Llobet to be used in a single project o...