Following a storm, the branches may be fragmented and dispersed through the water, so that merely diving or swimming in the vicinity causes itching and burning and may induce
[dtmag.com]
Wearing a full wetsuit, or even a thin spandex dive skin, helps protect a diver swimming in an area with fire coral.
[thoughtco.com]
Beachcombing, swimming, snorkelling, diving, wading, and watersports are common activities that can bring you in contact with marine animals.
[iamat.org]