Lovely. It appears you have this image posted twice. Please remove one of them :-). I believe this is more likely a Harbor Seal. The body shape and color of the adult seem more consistent. Here are some more references.
https://en.wikipedia.org/wiki/California_sea_lion (for comparison)
https://en.wikipedia.org/wiki/Harbor_seal
http://marinebio.org/species.asp?id=158
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