Claudio Contreras / Californian sea lion (Zalophus californianus) swimming in Southern sea palm (Eisenia arborea) and Giant Kelp (Macrocystis pyrifera) forest, San Benitos Islands, Baja California Pacific Islands Biosphe...

Claudio Contreras / Californian Sealion (Zalophus californianus) in kelp (Macrocystis pyrifera) forest, San Benito del Este Island, Baja California Peninsula Pacific Islands Biosphere Reserve, Baja California, Mexico, Ma...

Alex Mustard / California sea lion (Zalophus californianus) resting in the canopy of a forest of giant kelp (Macrocystis pyrifera). Santa Barbara Island, Channel Islands. Los Angeles, California, United States of Am...

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...

Jurgen Freund / Detail of Giant kelp (Macrocystis pyrifera) gas-filled bladders (pneumatocysts) Vancouver Island, British Columbia, Vancouver Island, Canada.

Pascal Kobeh / Group of California sea lions (Zalophus californianus) in a kelp forest (Macrocystis pyrifera), California, USA. Pacific ocean.

Pascal Kobeh / Group of California sea lions (Zalophus californianus) swimming in kelp forest (Macrocystis pyrifera), California, USA. Pacific ocean.

Brandon Cole / Red Sea Urchins (Stronglyocentrotus franciscanus) and Purple Sea Urchins (Stronglyocentrotus purpuratus) feeding on bottom algae and Giant kelp (Macrocystis pyrifera), Channel Islands National Marine...

Brandon Cole / Fish eating sea anemones (Urticina piscivora) and Giant Plumose Sea Anemones (Metridium farcimen) with Bull Kelp (Nereocystis luetkeana) behind, streaming in a gentle current. Washington, USA, Pacific...

Alex Mustard / A Weedy Seadragon (Phyllopteryx taeniolatus) amongst Giant Kelp (Macrocystis pyrifera). Fortescue Bay, Tasmania, Australia, March.

Alex Mustard / Draughtsboard Shark / Australian Swellshark (Cephaloscyllium laticeps) swims through a giant kelp forest (Macrocystis pyrifera). Like a pufferfish, this species of shark is able to rapidly swell with...

David Fleetham / Garibaldi (Hypsypops rubicundus) the state fish of California, in forest of giant kelp, (Macrocystis pyrifera) Catalina Island, California, USA.

Brandon Cole / Giant kelpfish (Heterostichus rostratus) hides among kelp plants, well camouflaged. California, USA, Pacific Ocean. NOT FOR SALE IN THE USA.

Georgette Douwma / Garibaldi (Hypsypops rubicanda) amongst Giant Kelp (Macrocystis sp) California, USA

Tim Laman / Garibaldi fish (Hypsypops rubicundus) amongst forest of Giant Kelp (Macrocystis pyrifera). Catalina Island, pacific, California, USA. July 2001.

Tim Laman / Giant Kelp (Macrocystis pyrifera) close up with detail of floats. Catalina Island, California, USA July

Tim Laman / Giant Kelp (Macrocystis pyrifera) close up with detail of floats. Catalina Island, California, USA July

Tim Laman / Giant Kelp (Macrocystis pyrifera) close up with detail of floats. Catalina Island, California, USA July

Georgette Douwma / Island kelpfish (Alloclinus holderi) in Giant kelp (Macrocystis pyrifera) forest, California, USA.

Georgette Douwma / Island kelpfish (Alloclinus holderi) in Giant kelp (Macrocystis pyrifera) forest, California, USA.

Brandon Cole / Looking up through Giant kelp forest {Macrocystis pyrifera} California USA Pacific Ocean. NOT FOR SALE IN USA

Brandon Cole / Close up of Giant kelp frond {Macrocystis pyrifera} California USA Pacific Ocean. NOT FOR SALE IN USA

Brandon Cole / Looking up through Giant kelp forest {Macrocystis pyrifera} California NOT FOR SALE IN USA

Georgette Douwma / Island Kelpfish swimming amongst giant kelp, USA.

Jeff Rotman / Giant kelp close-up, Pacific off California. Fastest growing plant.

Norbert Wu / Giant Kelp (Macrocystis pyrifera) forms dark, lush canopy forest in cold waters, southern California

Gary Bell/ Oceanwide / Giant Kelp (Macrocystis pyrifera) forest and scuba diver, Tasman Peninsula, Tasmania, Australia

Ralph Pace / Giant Kelp (Macrocystis pyrifera), Monterey, California

Norbert Wu / Garibaldi (Hypsypops rubicundus) and Pacific Jack Mackerel (Trachurus symmetricus) school in Giant Kelp (Macrocystis pyrifera) forest, Catalina Island, California

Norbert Wu / Garibaldi (Hypsypops rubicundus) and Pacific Jack Mackerel (Trachurus symmetricus) school in Giant Kelp (Macrocystis pyrifera) forest, Catalina Island, California

Flip Nicklin / Giant Kelp (Macrocystis pyrifera) forest, shot looking up to surface of water, Channel Islands National Park, California

Flip Nicklin / Giant Kelp (Macrocystis pyrifera) forest, with Garibaldi (Hypsypops rubicundus), Channel Islands National Park, California

Flip Nicklin / Giant Kelp (Macrocystis pyrifera) detail of air bladders, California

Flip Nicklin / Giant Kelp (Macrocystis pyrifera) forest, Channel Islands National Park, California

Flip Nicklin / Giant Kelp (Macrocystis pyrifera) forest, Channel Islands National Park, California

Flip Nicklin / Giant Kelp (Macrocystis pyrifera) forest, with Garibaldi (Hypsypops rubicundus), Channel Islands National Park, California

Alex Mustard / Orange sunflower star (Pycnopodia helianthoides) beneath a forest of giant bull kelp (Nereocystis luetkeana). Browning Pass, Port Hardy, Vancouver Island, British Columbia, Canada. Queen Charlotte Str...

Alex Mustard / Orange garibaldi damselfish (Hypsypops rubicundus) in a giant kelp (Macrocystis pyrifera) forest. Santa Barbara Island, Channel Islands. Los Angeles, California, United States of America. North East P...

Alex Mustard / Giant kelp (Macrocystis pyrifera) forest. Santa Barbara Island, Channel Islands. Los Angeles, California, United States of America. North East Pacific Ocean.

Alex Mustard / Red gorgonian (Lophogorgia chilensis) grows beneath a forest of Giant kelp (Macrocystis pyrifera), with kelp bass (Paralabrax clathratus). Santa Barbara Island, Channel Islands. Los Angeles, Californi...

Nick Hawkins / Pacific Herring (Clupea pallasii) eggs laid on giant kelp, coastal waters of the Great Bear Rainforest in British Columbia, Canada. March.

David Hall / Giant plumose anemones (Metridium farcimen) are among the tallest sea anemones in the world, with female Kelp greenling (Hexagrammos decagrammus), North Wall, Browning Pass, British Columbia, Canada....

David Hall / Giant plumose anemones (Metridium farcimen) are among the tallest sea anemones in the world, with female Kelp greenling (Hexagrammos decagrammus), North Wall, Browning Pass, British Columbia, Canada....

David Hall / Marine invertebrates including Crimson anemones (Cribrinopsis fernaldi), Painted anemones (Urticina crassicornis), Red soft coral (Gersemia rubriformis), Red sea urchins (Strongylocentrotus franciscan...

David Fleetham / Garibaldi (Hypsypops rubicundus) in forest of giant kelp, (Macrocystis pyrifera) off Santa Barbara Island, California, USA.

David Fleetham / Sheephead (Semicossyphus pulcher) female, and Garibaldi, (Hypsypops rubicundus) in forest of giant kelp (Macrocystis pyrifera) off Santa Barbara Island, California, USA.

David Fleetham / Sunlight through a forest of giant kelp (Macrocystis pyrifera) off Catalina Island, California, USA.

Shane Gross / Kelp crab (Pugettia producta) feeding on Giant kelp (Macrocystis pyrifera) off San Diego, California, USA