The fish and corals are too numerous to mention, but don’t get too close for their sake and yours. Corals can sting, scratches from their skeletons can easily be infected. Step on a stone fish and you may not walk for a week – if you’re lucky.
In some seasons there can be a plague of jellyfish for a few days or more – some are harmless or just irritating, but also occasionally there may be a Portuguese Man o’war. These have (rarely) caused fatalities. Best to wear a rash vest and leggings if you’re concerned (and they protect against UV too).
Jellyfish photographed in the Manila aquarium
The animals themselves are commonly seen, and filmed, around the islands in the bay. Often they are quite content to mind their own business as snorkelers get quite close. Their eggs are sometimes found on a beach, raided by monitor lizards I guess.
Nothing dangerous that I’ve heard of, but we occasionally see a small shark near the shore – maybe 50cm or so. There are reports of divers spotting basking sharks – not at all dangerous.
I have seen sting rays between Double and Capsalay Islands – always scooting off at quite a pace as I approach – which is good as they have dangerous venom.
This month (March 2019) a guest at Capasalay Reef Camp spotted a Manta Ray with a span of at least a metre on the reef south of the tombolo.