shore

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John D MacArthur Beach State Park

MacArthur Beach State Park isn't your typical Keys dive, and that's precisely why we love it. Forget the deep reefs for a moment; this is a place to slow down, to really look. We're talking shallow, mostly sandy bottom with patches of seagrass, a perfect hunting ground for spotting the small stuff. We often find ourselves drifting along, eyes peeled for the incredibly camouflaged seaweed blennies or the skittish sheepshead minnows darting through the blades. Visibility can be a bit variable, especially after a good blow, but when it’s calm, the sunlight filters down, illuminating little worlds. Our favourite moments here are watching common snook cruise the edges of the grass beds, or spotting the flash of a barracuda zipping through a school of broad-striped anchovies. You’ll see plenty of mojarras kicking up sand, and if you’re patient, a sponge cardinalfish might just peek out from its hiding spot. It’s a gentle, unassuming dive that rewards curiosity. This spot is ideal for macro photographers or anyone who enjoys a relaxed, exploratory dive. We’d suggest going at high tide for the best conditions and easiest entry. You won't find dramatic drop-offs, but you will find an abundance of life thriving in the shallows.