Alex Mustard / Young California sea lion (Zalophus californianus) playing in the canopy of a forest of Giant kelp (Macrocystis pyrifera). Santa Barbara Island, Channel Islands. California, USA. North East Pacific Oc...

Solvin Zankl / Kelp forest (Laminaria hyperborea), Atlantic Ocean, North West Norway, March.

Mike Potts / Auckland Island brown teal (Anas aucklandica) flightless and feeds and roosts in onshore kelp beds, lives predominantly on Enderby Island, Auckland Islands, Subantarctic New Zealand January

Alex Mustard / Blacksmiths (Chromis punctipinnis) school swam through a giant kelp (Macrocystis pyrifera) forest, Santa Barbara Island, Channel Islands. Los Angeles, California, USA, North East Pacific Ocean.

Alex Mustard / School of Blacksmith fish (Chromis punctipinnis) swim through a giant kelp (Macrocystis pyrifera) forest. Santa Barbara Island, Channel Islands. Los Angeles, California, United States of America. Nort...

Solvin Zankl / Oarweed (Laminaria digitata) from Roscoff, France, April. Preserved specimen.

Solvin Zankl / Brown algae (Desmarestia anceps) from King George Island, South Shetland Islands, Antarcica. Preserved specimen.

Solvin Zankl / Dead man's rope algae (Chorda filum), Purbeck Marine Wildlife Reserve, Kimmeridge Bay, Dorset, UK, July.