Mark MacEwen / Giant clam (Tridacna maxima) in rockpool on Heron Island, southern Great Barrier Reef, Queensland, Australia.
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Mark MacEwen / Giant clam (Tridacna maxima) in rockpool on Heron Island, southern Great Barrier Reef, Queensland, Australia.
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GEORGETTE DOUWMA / Small giant clam (Tridacna maxima) in Porites coral. Andaman Sea, Thailand
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GEORGETTE DOUWMA / Mantle of Small giant clam (Tridacna maxima) Andaman Sea, Thailand
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Chris Newbert / Small Giant Clam (Tridacna maxima) siphon detail, showing colorful symbiotic photosynthetic algae growing in Giant Clam's flesh, algae produces oxygen while consuming waste ammonia, Solomon Islands
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Chris Newbert / Small Giant Clam (Tridacna maxima) detail of mantle, Coral Sea
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Fred Bavendam / Small Giant Clam (Tridacna maxima) sitting in front of a small colony of Soft Coral (Dendronephthya sp), Great Barrier Reef, Queensland, Australia
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Fred Bavendam / Small Giant Clam (Tridacna maxima) mantle, Lembeh Strait, Indonesia
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Fred Bavendam / Small Giant Clam (Tridacna maxima) mantle, Lembeh Strait, Indonesia