Billy Causey has a keen eye for recreational boaters doing dumb things around vulnerable coral reefs in the Florida Keys. Especially on heavy boating holidays like the Fourth of July. “Lookee there,” says Causey as his boat heads out from Big Pine Key. He points to a nearby cluster of party boats. “A lot of them are up on the sea grasses and people are walking around on top of small colonies of coral.” This is why Causey – the southeast regional director for the National Marine Sanctuary Program