More deep sea sharks

The deep water trawls that have produced the chimaeras also brought up some other deep water goodies. Here is a couple of heads of a very poorly known deepsea shark, Apristurus melanoasper. These look a lot like the shallow water spotted dogfish, other than being very black, but when you look in detail there are a lot of differences. Among these is the mouth that shows the teeth all the time, and a large snout full of sensory tubes, rather like that in the snout of chimaeras.