unidentified beaked whale species...

ON this afternoons tour an unidentifiable species of beaked whale was seen to surface approximately 3 times, the animal blew twice and then disappeared. One of the passengers onboard managed to get a picture which shows a dark greyish back with and melon shaped head and no dorsal fin was seen at the surface. A possibility is that it could have been the spade toothed whale, however this species has hardly ever been seen alive, but the evidence could be the fact that the dorsal fin was so far back on the animal

but i guess we will never know...