Tony Wu / Fisherman holding deep-sea Rockcod (Sebastes matsubarai) on fishing boat. Suruga Bay, Shizuoka Prefecture, Honshu, Japan. April 2018.

Alex Mustard / A diver encounters a male cabezon (Scorpaenichthys marmoratus) guarding eggs. This is a large fish which can weigh over 10kg. Edmonds Underwater Park, Seattle, Washington, USA. Puget Sound, North East...

Steven Kazlowski / Photographers in a skiff along the coast during autumn freeze up, Beaufort Sea, off the 1002 area of the Arctic National Wildlife Refuge, North Slope, Alaska