Curaçao

The day is usually self-directed. Shops hand over a pickup truck or let you load tanks into a rental, and you work down the leeward coast choosing entries off a map: some are resort steps, others a rough track to a rubble beach where you walk in over ironshore in boots. Nobody sets your schedule, so two or three dives plus a night dive is a normal count, and boats cover the sites too far out or too deep to reach on foot.

The reef runs as a strip parallel to the shore. You cross a shallow shelf, reach the lip where the bottom tips over, and follow the slope down into blue. Along parts of the coast that shelf doubles, with a second reef further out that only boat divers reach. The island is long and the coast changes with it: the western end generally holds the better coral, the middle is urban diving beside a working port, and the eastern bays give sheltered entries. The north coast opens up only when the swell drops.

Two things separate it from its neighbours. Wrecks are unusually easy to reach, a couple of them within swimming distance of a shore entry, so wreck diving does not have to mean a boat day. And Willemstad is a working city, with a UNESCO-listed historic centre, restaurants and enough going on that the diving fits around the trip rather than defining it. That matters if you are travelling with people who do not dive.

It rewards independent divers above all: anyone who wants to set their own profiles, get in at odd hours and skip queuing for a boat ladder. Conditions give beginners little to fight, so the limiting factor is usually the entry rather than the water, and macro photographers can spend a full tank on a few metres of shelf. The trade-offs are effort and scale. You carry your own gear over rock and sand, and the fish life is smaller and quieter than at sites with real current running past.