Dolphin Identification Help Please

We had dolphin visitors on our passage from Suwarrow to American Samoa. They
don't appear in my marine mammal guides for BC. Go figure? So...for those of
you marine mammal experts, or those with good internet...please help.

The dolphins were similar in shape to our striped dolphin at home. They were
sleek looking, about 2 meters long, and with a pointed snout. They were
solid grey all over, with some having whitish spots or speckles visible on
their backs. Also, most seemed to have a white tip on their snout. If you
have any suggestions, we'd love help to solve the riddle. Feel free to use
the comment box below.