Schools of Blue Tang are the most common fish on the corals around Lobos Island. They are accostomed to being fed and visited so they are not scared of people snorkeling.
Mixed in with the Blue Tangs are other fish who use the school to hide themselves. Parrot fish and, lately, quite a few Yellow Tails, are amongst them.
They will suddenly stop on a particuar bunch of coral and then, just as suddenly, move on.