Shattil & Rozinski / Kelp floating on water at the edge of the Great Bear Rainforest, British Columbia, Canada, September

Juergen Freund / New Zealand fur seals (Arctocephalus forsteri) swimming amongst kelp. Albany, Western Australia

Juergen Freund / Garibaldi fish {Hypsypops rubicunda} in kelp forest, California, USA, Pacific coast

Alex Mustard / Portrait of cod (Gadus morhua) in a kelp forest with other cod in the background. These fish had moved into coastal waters in early spring for spawning. Husavik, Iceland, North Atlantic Ocean. April 2...

Alex Mustard / A diver swims with an aggregation of Atlantic cod (Gadus morhua) over a kelp forest. These cod were gathered in early spring off the north coast of Iceland to spawn. Thorshofn, Iceland. North Atlantic...

Alex Mustard / A diver swims with an aggregation of atlantic cod (Gadus morhua) over a kelp forest, fish approximately 1m in length, cod were gathered in early spring off the north coast of Iceland to spawn. Thorsho...

Alex Mustard / A diver swims with an aggregation of Atlantic cod (Gadus morhua) over a kelp forest, fish approximately 1m in length. These cod were gathered in early spring off the north coast of Iceland to spawn....

Juergen Freund / Diver watching Weedy seadragon (phyllopteryx taeniolatus) amongst seaweed, Albany, Western Australia

Juergen Freund / New Zealand fur seal (Arctocephalus forsteri) swimming amongst kelp. Albany, Western Australia

Juergen Freund / Diver watching Weedy seadragon (phyllopteryx taeniolatus) amongst seaweed, Albany, Western Australia

Bernard Castelein / Tangleweed {Laminaria digitata} Northumberland, UK

Juergen Freund / Twisted trunks of Giant kelp {Macrocystis integrifolia} California, USA, Pacific Ocean

Juergen Freund / Seapalm kelp fixed on rocks underwater {Postelsia palmaeformis} Pacific Canada