This is just for fun and the only rule is: no researching. Post your best guesses in the comments. Reading other people’s answers before posting your own is optional. Answer will be posted in the comments tomorrow.
The unique body shape of Dall’s porpoise makes it easily distinguishable from other cetacean species. The animal has a very thick body and a small head. The colouration is rather like that of a killer whale[.]
[…]
The porpoises will approach boats and will bow- and stern-ride, but may lose interest, unless the boat is travelling quickly. They will also “snout ride” on waves made by the heads of large whales. They may also do more calm behaviors, such as subdued rolls at the surface. They rarely leap from the water. Dall’s Porpoises have never been observed to sleep.
Dals Porpoise :)
commerson’s dolphins (they used to have some at SW San Diego)
Yep it looks like the commerson dolphins they have here at Seaworld San Diego
And their names are Maurice and Josephine.
ANSWER TIME:
This is a Dall’s Porpoise. From the Wiki entry:
Booya!
They’re also the target of the largest porpoise hunt in the world :(
http://www.takepart.com/article/2013/09/19/porpoise-iwate-japan-hunt-bigger-than-cove-taiji-japan