Alex Mustard / A yellow tube sponge (Aplysina fistularis) growing on a Caribbean coral reef, withsun burst above. East End, Grand Cayman, Cayman Islands, British West Indies. Caribbean Sea.
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Claudio Contreras / Yellow tube sponge (Aplysina fistularis) and diver, Guanahacabibes Peninsula National Park, Pinar del Rio Province, western Cuba., Floating debris cleaned