Short article about snorkeling out of San Pedro ... the first photo is a little suspect as that species of butterfly fish is not found in Belize - I believe it is a Pacific species. But the rest of the article is accurate.
"...Typical sightings include lobster, octopus, squid, nudibranches, swimming eels, Spanish dancers, toad fishes, frog fishes, sea slugs, blue tang, tarpon, barracuda, sharks, rays and lots of colourful reef fish, some of them sound asleep. Coral polyps open and under light you can see their true brilliant colors. Armed with a dive light, snorkelers can see Caribbean night life at its best!.."