The spotted ratfish (Hydrolagus colliei) is a chimaera found in the north-eastern Pacific Ocean. Often seen by divers at night in the Pacific Northwest, this cartilaginous fish gets its characteristic name from a pointed rat-like tail. The ratfish lays leathery egg cases on the bottom of muddy or sandy areas, which are often mistaken by divers as something inanimate.
The spotted ratfish (Hydrolagus colliei), a chimaera found in the north-eastern Pacific Ocean, is known for its rat-like tail and nocturnal habits. Divers frequently encounter this cartilaginous fish in the Pacific Northwest, where it lays leathery egg cases on muddy or sandy bottoms that are often mistaken for inanimate objects.