Claim: Cylindroleberididae are found in marine areas all the way down to 14,800 ft and most are only .08 in long.
Evidence: Cylindroleberididae is a family of ostracods that shows remarkable morphological diversity. Species of the Cylindroleberididae are found in marine areas, from shallow waters to depths of more than 4,500 metres (14,800 ft). Most species are approximately 2 millimetres (0.08 in) long.