Barranco Seco

At 5 metres, a natural volcanic arch marks the start of the shallow route, its underside patched with delicate tube worms and vivid red and yellow sponge growth. Divers sticking to this shallower profile move along rock formations to around 18 metres, an easy, unhurried dive well suited to anyone close to finishing Open Water. Take the deeper route instead and the character changes entirely: a slope descending toward 35 metres opens onto a dense shoal of roncadores, thick enough that the site earns its second name from the fish alone, and a carpet of garden eels swaying in the sand at 30 metres. Two entirely different dives, launched from the same boat, on the same reef system.

Barranco Seco packs a genuine easy-to-advanced range into one site, without pretending the deep route is just a gentler version of the shallow one. The Arch suits divers still building confidence. Los Roncadores, the deeper variant, asks for real recent experience and rewards it with fish density that's hard to match elsewhere on this coast: thousands of garden eels, a grunt shoal you can lose count of, and tube worms delicate enough that careless buoyancy will scatter them in seconds.

Perfect buoyancy matters most around the tube worms on the arch's underside; a stray fin kick undoes what took years to grow. Confirm with your operator which variant, the Arch or Los Roncadores, is on the day's plan, since the two ask for different certification levels. The site is boat-only; the adjacent beach has no road access. A 5mm wetsuit covers most of the year, with a hood or extra layer worth adding in winter.