I guess it would have to depend upon what day you go. The first time I went, the water was clear, saw some stingrays, a puffer fish, got to hold sea urchins (not the brown spiny ones), but the second time I went the waves were a bit choppy and even though it is shallow, the water was pretty murky.

It's a good experience no matter what, but no I wouldn't go just for the snorkeling.