Rex Cauldwell took these photos. Iguanas mostly eat plants they forage on the ground, but they will get up on the mangrove branches at night and catch bugs flying by.

They can defend themselves rather well; if you were to catch one, you would get severely clawed and whacked by their tail.

The Iguana at right was in a mangrove lagoon. It was 4 feet long. Big guy, but I've seen bigger since then. photo Elena Harley.