Originally Posted by
Merlin666
On Kauai, if waves are calm enough, snorkeling is always a great activity for a rainy day cause the fish don't care.
A small warning to give along with this advice; locals are taught never to swim or surf during or right after heavy rains when the waters are murky with runoff. This is especially true where rivers and streams empty into the ocean, as sharks are known to feed on food that's been washed out to sea.