Snorkeling
The fringing reef is a fair distance from the shore at the northern end of Welcome Bay, where it starts at the quite prominent 'Bird Rock'. It runs almost all the way down to the jetty before there is a small gap where the boats come in. The reef starts again near the rocks at the southern end of the beach, and runs around the corner to Nudey Beach. Along this stretch it is extremely close to shore - literally just a few steps from the shore. The snorkelling at Fitzroy is greatly underrated. Visibility can be a bit low, especially after rough weather, but the coral is excellent and the variety of fish superb. The clownfish (Amphiprion percula) can be found, as well as other anemonefish. Parrotfish and wrasses are common, and green sea turtles regularly frequent the bay.
It is unlikely that box jellyfish would be encountered at Fitzroy Island due to the 4 km passage between the island and the mainland, but they have been found there occasionally, as well as other stinging jellyfish.
Read more about this topic: Fitzroy Island National Park