La Garita

Most centres run La Garita as a quick boat dive from Tarifa harbour or straight off the causeway onto the island; there's also a shore entry near Playa Chica with a free descent from five or six metres. However you get in, the dive is on the island's north side, where the Mediterranean and the Strait part ways. Pick up the rock-and-sand interface at the top of a gentle talus slope and follow it along: a low rock wall with overhangs and a few short swim-throughs on one side, open sand on the other, bottoming out around twelve to fourteen metres. Orange cup coral crusts the exposed rock and turns vivid under a torch. A grotto on the standard route usually holds lobster. Guides slow the group there. The shallow profile buys you a long bottom time, which is why centres often use La Garita as an early warm-up before a deeper dive at Marroquí or the wrecks. Some boats carry on around the cape on a route called La Garita 2, where the water deepens past fifteen metres and the current picks up. Not all of them run it, and it asks for more than the main dive does.

When the levante blows, La Garita is where Tarifa's dive boats go. Almost every site around the island faces east or south into the Strait's current. This one sits on the sheltered north face, so an east wind that closes Marroquí, the San Andrés wreck and the rest usually leaves La Garita calm enough to dive. It is also the shallow option in an area where most sites start at fourteen metres and drop away. The gentle five-to-fourteen-metre profile makes it the local choice for first dives, confined-water skills and the refresher dive after a long break. An archaeological footnote sets it apart from its neighbours. Phoenician and Roman anchor stones lie in the sand here, left by ships that worked this coast long before the 19th-century steamers on Tarifa's deeper wrecks. The marine life is small-scale Mediterranean: cup coral crusting the rock, nudibranchs and shrimp in the margins, lobster in the grotto, electric rays settled into the sand patches.

Nudibranchs work the rock faces along the route, Flabellina affinis the one you'll see most, with several species turning up on a good day. Banded shrimp sit back in the cracks. Scorpionfish press flat into the rock, near-invisible until they shift. Pipefish drift the seam where rock meets sand. You'll want a torch down here, both to pull subjects out of the overhangs and to light the orange Astroides, which barely registers without a beam on it. Wide-angle has little to work with. The terrain is low rock and sand, not a dramatic wall. Plan a long, unhurried bottom time, let the shallow profile do the work, and stay off the rock while you frame the small stuff.

Always book through a centre. The waters around Isla de Tarifa are off-limits to independent diving, and the centre arranges the natural-park authorisation when you book. The Strait keeps the water colder than Andalucía's latitude implies. Cool Atlantic flows through it all year, so the bottom sits around seventeen to nineteen degrees even in August; a seven-millimetre wetsuit and hood are the sensible summer minimum, and gloves, booties and a hood are year-round kit. The main route is slack and easy, but the cape extension catches more current, and Tarifa's tides can stir even a sheltered site, so the centre still picks your slot around the day's tide. Bring a torch for the overhangs and a surface marker for the ascent. Centres run night dives here on request, with a separate park authorisation. If the anchor stones interest you, ask the guide to point them out; they sit in the sand and are easy to swim past.