Chimaeras live in temperate ocean f

Chimaeras live in temperate ocean floors down to 2,600 m (8,500 ft) deep, with few occurring at depths shallower than 200 m. Consequently, these are also among the few species from the Chimaera order kept in public aquaria. They have elongated, soft bodies, with a bulky head and a single gill-opening. They grow up to 150 cm (4.9 ft) in length, although this includes the lengthy tail found in some species. In many species, the snout is modified into an elongated sensory organ. Their skin is smooth and largely covered by placoid scales, and their color can range from black to brownish gray for defense, most chimaeras have a venomous spine located in front of the dorsal fin. They also differ from sharks in that their upper jaws are fused with their skulls and they have separate anal and urogenital openings.