Here's a better site with more info
LINK I found this part to be particularily interesting:
E.L. Wallace, a man who served twice as president of the Natural History Society of British Columbia. He had the following to say about the animal:
"My examination of the monster was quite thorough. I felt in its mouth and found it had no teeth. Its head is large and its neck fully twenty feet long. The body is weak and the tail is only three feet in length from the end of the backbone. These facts do away with the whale theory, as the backbone of a whale is far larger than any bone in this animal. Again, its tail is too weak for an animal of the deep and does away with that last version.
"With a bill like it possesses, it must have lived on herbage . . . I would call it a type of plesiosaurus."
IMO I don't think this animal is a plesiosaurus or a whale. I think it's some type of undiscovered species of sea animal.