Steller sea lions (Eumetopias jubatus), three playing underwater, Inian Island, Alaska, USA. August.  -  David Hall
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David Hall / Steller sea lions (Eumetopias jubatus), three playing underwater, Inian Island, Alaska, USA. August.
Steller sea lions (Eumetopias jubatus) playing underwater, Inian Island, Alaska, USA. August.  -  David Hall
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David Hall / Steller sea lions (Eumetopias jubatus) playing underwater, Inian Island, Alaska, USA. August.
Split-level of Cormorants (Phalacrocorax sp.) standing on rocks with Sea lettuce (Ulva sp.) seen underwater, Hussar Bay, Nigei Island, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Split-level of Cormorants (Phalacrocorax sp.) standing on rocks with Sea lettuce (Ulva sp.) seen underwater, Hussar Bay, Nigei Island, Queen Charlotte Strait, British Columbia, Canada. September.
Fried Egg Jellyfish (Phacellophora camtschatica) viewed from below; Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Fried Egg Jellyfish (Phacellophora camtschatica) viewed from below; Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.
A Giant rock scallop (Crassadoma gigantea) encrusted with and surrounded by several other invertebrates, including White anemones (Metridium sp.), White mushroom ascidians (Distaplia sp.), Red soft co...  -  David Hall
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David Hall / A Giant rock scallop (Crassadoma gigantea) encrusted with and surrounded by several other invertebrates, including White anemones (Metridium sp.), White mushroom ascidians (Distaplia sp.), Red soft co...
Harbor seal (Phoca vitulina) using a large,encrusted boulder as a tool to scratch itself against, Gowland Harbour, Quadra Island, British Columbia, Canada. March.  -  David Hall
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David Hall / Harbor seal (Phoca vitulina) using a large,encrusted boulder as a tool to scratch itself against, Gowland Harbour, Quadra Island, British Columbia, Canada. March.
Split level of a Lion's mane Jellyfish (Cyanea capillata) and Feather-boa kelp (Egregia menziesii), Seven-tree Island, Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Split level of a Lion's mane Jellyfish (Cyanea capillata) and Feather-boa kelp (Egregia menziesii), Seven-tree Island, Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.
Split level of a Sockeye salmon (Oncorhynchus nerka) in shallow water; Adams River, British Columbia, Canada. October.  -  David Hall
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David Hall / Split level of a Sockeye salmon (Oncorhynchus nerka) in shallow water; Adams River, British Columbia, Canada. October.
Split level of Sockeye salmon (Oncorhynchus nerka) during migration; Adams River, British Columbia, Canada. October.  -  David Hall
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David Hall / Split level of Sockeye salmon (Oncorhynchus nerka) during migration; Adams River, British Columbia, Canada. October.
Sockeye salmon (Oncorhynchus nerka) migration, Adams River, British Columbia, Canada. October.  -  David Hall
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David Hall / Sockeye salmon (Oncorhynchus nerka) migration, Adams River, British Columbia, Canada. October.
Sockeye salmon (Oncorhynchus nerka) migration, Adams River, British Columbia, Canada. October.  -  David Hall
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David Hall / Sockeye salmon (Oncorhynchus nerka) migration, Adams River, British Columbia, Canada. October.
Crimson anemone (Cribrinopsis fernaldi) with Candy-striped shrimps (Lebbeus grandimanus) living symbiotically. Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Crimson anemone (Cribrinopsis fernaldi) with Candy-striped shrimps (Lebbeus grandimanus) living symbiotically. Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.
Candy stripe shrimp (Lebbeus grandimanus), a commensal species that associates with crimson sea anemones. Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Candy stripe shrimp (Lebbeus grandimanus), a commensal species that associates with crimson sea anemones. Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.
Sea urchin shrimp on venemous urchin {Periclimenes colemani & Asthenosoma} Papua New Guinea  -  David Hall
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David Hall / Sea urchin shrimp on venemous urchin {Periclimenes colemani & Asthenosoma} Papua New Guinea
Decorated warbonnet fish (Chirolophis decoratus) portrait, Basket Bay, Alaska, USA. August.  -  David Hall
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David Hall / Decorated warbonnet fish (Chirolophis decoratus) portrait, Basket Bay, Alaska, USA. August.
Decorated warbonnet (Chirolophis decoratus) portrait, Sitka, Alaska, USA. August.  -  David Hall
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David Hall / Decorated warbonnet (Chirolophis decoratus) portrait, Sitka, Alaska, USA. August.
Northern basket stars (Gorgonocephalus eucnemis), branching and staghorn bryozoans, calcareous tubeworms, snails and barnacles, Baranof, Alaska, USA. August.  -  David Hall
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David Hall / Northern basket stars (Gorgonocephalus eucnemis), branching and staghorn bryozoans, calcareous tubeworms, snails and barnacles, Baranof, Alaska, USA. August.
Northern Basket Stars (Gorgonocephalus eucnemis) and Crimson Anemones (Cribrinopsis fernaldi), Baranof, Sitka, Alaska. August.  -  David Hall
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David Hall / Northern Basket Stars (Gorgonocephalus eucnemis) and Crimson Anemones (Cribrinopsis fernaldi), Baranof, Sitka, Alaska. August.
Northern Basket Star (Gorgonocephalus eucnemis), Gambier Bay, Alaska. August.  -  David Hall
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David Hall / Northern Basket Star (Gorgonocephalus eucnemis), Gambier Bay, Alaska. August.
Pacific spiny lumpsucker (Eumicrotremus orbis), yellow form, which has fused ventral fins that form a suction disk, enabling it to attach itself to rocks and seaweed, Gambier Bay, Alaska, USA. August.  -  David Hall
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David Hall / Pacific spiny lumpsucker (Eumicrotremus orbis), yellow form, which has fused ventral fins that form a suction disk, enabling it to attach itself to rocks and seaweed, Gambier Bay, Alaska, USA. August.
Pacific spiny lumpsucker (Eumicrotremus orbis), red form, which has fused ventral fins that form a suction disk, enabling it to attach itself to rocks and seaweed, Gambier Bay, Alaska, USA. August.  -  David Hall
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David Hall / Pacific spiny lumpsucker (Eumicrotremus orbis), red form, which has fused ventral fins that form a suction disk, enabling it to attach itself to rocks and seaweed, Gambier Bay, Alaska, USA. August.
Rhinoceros crab (Rhinolithodes wosnessenskii) portrait, Basket Bay, Alaska, USA. August.  -  David Hall
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David Hall / Rhinoceros crab (Rhinolithodes wosnessenskii) portrait, Basket Bay, Alaska, USA. August.
Quillback rockfish (Sebastes maliger) with venomous dorsal fin spines raised. Basket Bay, Alaska, USA. August.  -  David Hall
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David Hall / Quillback rockfish (Sebastes maliger) with venomous dorsal fin spines raised. Basket Bay, Alaska, USA. August.
Decorated warbonnet fish (Chirolophis decoratus) portrait, Basket Bay, Alaska, USA. August.  -  David Hall
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David Hall / Decorated warbonnet fish (Chirolophis decoratus) portrait, Basket Bay, Alaska, USA. August.
Split level of Sunflower stars (Pycnopodia helianthoides) on rocks underwater, Minstrel Island, British Columbia, Canada. March.  -  David Hall
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David Hall / Split level of Sunflower stars (Pycnopodia helianthoides) on rocks underwater, Minstrel Island, British Columbia, Canada. March.
A young Giant Pacific Octopus (Enteroctopus dofleini) attempting to cross over and avoid touching a row of huge Sunflower sea stars (Pycnopodia helianthoides), Hanson's Island, British Colulmbia,...  -  David Hall
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David Hall / A young Giant Pacific Octopus (Enteroctopus dofleini) attempting to cross over and avoid touching a row of huge Sunflower sea stars (Pycnopodia helianthoides), Hanson's Island, British Colulmbia,...
Chiton (Tripoplax trifida), Long Bay, Jedediah Island, British Columbia, Canada. February. Chitons are molluscs - their shells consist of a series of 8 overlapping plates.  -  David Hall
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David Hall / Chiton (Tripoplax trifida), Long Bay, Jedediah Island, British Columbia, Canada. February. Chitons are molluscs - their shells consist of a series of 8 overlapping plates.
The Umbrella crab (Crytptolithodes sitchensis) viewed from above, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / The Umbrella crab (Crytptolithodes sitchensis) viewed from above, Queen Charlotte Strait, British Columbia, Canada. September.
Umbrella Crab (Crytptolithodes sitchensis) portrait, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Umbrella Crab (Crytptolithodes sitchensis) portrait, Queen Charlotte Strait, British Columbia, Canada. September.
Umbrella crab (Cryptolithodes sitchensis) resembling a discarded mollusc shell, Queen Charlotte Strait, British Columbia, Canada. October.  -  David Hall
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David Hall / Umbrella crab (Cryptolithodes sitchensis) resembling a discarded mollusc shell, Queen Charlotte Strait, British Columbia, Canada. October.
Vermilion Rockfish (Sebastes miniatus) portrait, Nigei Island, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Vermilion Rockfish (Sebastes miniatus) portrait, Nigei Island, Queen Charlotte Strait, British Columbia, Canada. September.
White-lined chiton (Tonicella insignis), Staples Island, Queen Charlotte Strait, British Columbia, Canada. October.  -  David Hall
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David Hall / White-lined chiton (Tonicella insignis), Staples Island, Queen Charlotte Strait, British Columbia, Canada. October.
Pacific White-sided dolphins (Lagenorhynchus obliquidens) underwater, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Pacific White-sided dolphins (Lagenorhynchus obliquidens) underwater, Queen Charlotte Strait, British Columbia, Canada. September.
Pacific White-sided dolphins (Lagenorhynchus obliquidens) underwater, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Pacific White-sided dolphins (Lagenorhynchus obliquidens) underwater, Queen Charlotte Strait, British Columbia, Canada. September.
Schooling yellowtail rockfish (Sebastes flavidus) with white plumose anemones, red soft coral, brown finger sponges, and an orange bloodstar. This fish often schools with other rockfish species. Hunt...  -  David Hall
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David Hall / Schooling yellowtail rockfish (Sebastes flavidus) with white plumose anemones, red soft coral, brown finger sponges, and an orange bloodstar. This fish often schools with other rockfish species. Hunt...
Armored Sea Cucumber (Psolus chitonoides), Seven Tree Island, Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September .  -  David Hall
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David Hall / Armored Sea Cucumber (Psolus chitonoides), Seven Tree Island, Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September .
Split level of Acorn barnacles (Balanus glandula) just below the surface, Seven Tree Island, Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Split level of Acorn barnacles (Balanus glandula) just below the surface, Seven Tree Island, Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.
Acorn barnacles (Semibalanus cariosus) and (Balanus glandula), Mussels (Mytilus sp.), and Plumose anemones (Metridium senile) underwater at high tide, Seven Tree Island, Browning Pass, Queen Charlotte...  -  David Hall
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David Hall / Acorn barnacles (Semibalanus cariosus) and (Balanus glandula), Mussels (Mytilus sp.), and Plumose anemones (Metridium senile) underwater at high tide, Seven Tree Island, Browning Pass, Queen Charlotte...
Black-and-white sea flea (Chromopleustes oculatus) on a Sunflower star (Pycnopodia helianthoides), Port Neville, Johnstone Strait, British Columbia, Canada. March.  -  David Hall
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David Hall / Black-and-white sea flea (Chromopleustes oculatus) on a Sunflower star (Pycnopodia helianthoides), Port Neville, Johnstone Strait, British Columbia, Canada. March.
Black rockfish (Sebastes melanops) amongst Bull kelp (Nereocystis luetkeana); Hunt Rock, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Black rockfish (Sebastes melanops) amongst Bull kelp (Nereocystis luetkeana); Hunt Rock, Queen Charlotte Strait, British Columbia, Canada. September.
Black rockfish (Sebastes melanops) amongst Bull kelp (Nereocystis luetkeana); Hunt Rock, Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Black rockfish (Sebastes melanops) amongst Bull kelp (Nereocystis luetkeana); Hunt Rock, Queen Charlotte Strait, British Columbia, Canada. September.
Black rockfish (Sebastes melanops) with Bull kelp (Nereocystis luetkeana). Seven Tree Island, Browning Pass, Queen Charlotte Strait; British Columbia, Canada. October.  -  David Hall
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David Hall / Black rockfish (Sebastes melanops) with Bull kelp (Nereocystis luetkeana). Seven Tree Island, Browning Pass, Queen Charlotte Strait; British Columbia, Canada. October.
Black Rockfish (Sebastes melanops) with encrusted rock wall; North Wall, Browning Pass, British Columbia, Canada. October. Encrusting organisms seen include calcareous tubeworms, crustose coralline al...  -  David Hall
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David Hall / Black Rockfish (Sebastes melanops) with encrusted rock wall; North Wall, Browning Pass, British Columbia, Canada. October. Encrusting organisms seen include calcareous tubeworms, crustose coralline al...
The blue-purple iridescence of this algal seaweed (Fauchea laciniata) is the result of light reflecting off of gland cells embedded in its surface layer. Barkley Sound, Vancouver Island, British Colum...  -  David Hall
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David Hall / The blue-purple iridescence of this algal seaweed (Fauchea laciniata) is the result of light reflecting off of gland cells embedded in its surface layer. Barkley Sound, Vancouver Island, British Colum...
Blue-lined Chiton (Tonicella undocaerulea) Queen Charlotte Strait, British Columbia, Canada. September.  -  David Hall
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David Hall / Blue-lined Chiton (Tonicella undocaerulea) Queen Charlotte Strait, British Columbia, Canada. September.
Cabezon fish (Scorpaenichthys marmoratus) profile, Barkley Sound, Vancouver Island, British Columbia, Canada. September.  -  David Hall
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David Hall / Cabezon fish (Scorpaenichthys marmoratus) profile, Barkley Sound, Vancouver Island, British Columbia, Canada. September.
Split level of Sockeye Salmon (Oncorhynchus nerka) and Chinook Salmon (Oncorhynchus tshawytscha) during the salmon run; Adams River, British Columbia, Canada. October.  -  David Hall
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David Hall / Split level of Sockeye Salmon (Oncorhynchus nerka) and Chinook Salmon (Oncorhynchus tshawytscha) during the salmon run; Adams River, British Columbia, Canada. October.
Sockeye Salmon (Oncorhynchus nerka) and Chinook Salmon (Oncorhynchus tshawytsha) (right) during the salmon run; Adams River, British Columbia, Canada. October.  -  David Hall
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David Hall / Sockeye Salmon (Oncorhynchus nerka) and Chinook Salmon (Oncorhynchus tshawytsha) (right) during the salmon run; Adams River, British Columbia, Canada. October.
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