In addition to harbor seals (Phoca vitulina richardsi) you might see...
He's about the same size and roughly same shape as the harbor seals, and is easy to miss.
One difference is that he's solid-colored instead of spotted, but some harbor seals are nearly as plain.
Harbor seals have fairly short thick hind flippers and the digits are all about the same length. The easiest way to identify a juvenile elephant seal here is by the shape of the tail flippers.
In contrast, elephant seals have hind flippers that are thin and deeply falcate (the middle digits are shortest, giving each flipper a cutout "fishtail" appearance