Silverado

Overview

Silverado is a small, shallow pinnacle on the fringe of Cocos Island (Isla del Coco), the UNESCO-listed marine national park that sits roughly 550 km (about 340 miles) off Costa Rica’s Pacific coast. Sources place it just south of Chatham Bay, near one of the island’s coastal waterfalls. Unlike Cocos’s deep, current-swept signature sites, Silverado is a gentle affair: a rocky knoll rising to within a couple of metres of the surface, with divers settling on a sandy bottom at around 13 m (40 ft). Its fame rests on one thing — silvertip sharks.

Why divers come

Silverado is reported to be the only known silvertip shark cleaning station at Cocos Island, and the site’s name comes directly from that association. Silvertips are handsome, robust reef sharks — white-edged fins, a confident cruise — and watching them queue for cleaning over a shallow pinnacle is a genuinely uncommon sight. The catch is honesty: this is a boom-or-bust dive. Multiple guides describe it as feast-or-famine, and dive operators note that silvertip numbers here declined markedly (some accounts point to around 2007), possibly as more aggressive Galápagos, blacktip and tiger sharks moved in. You may find several silvertips, or none.

The dive

Guides describe the routine as patient and low-effort. Divers drop onto the sand near the roughly 2-metre-high pinnacle and simply wait. Silvertips are shy and will often peel away as divers approach, but as they grow accustomed to a still, quiet group they tend to circle back and make progressively closer passes. Because the site is so shallow, bottom time is generous — a real contrast to Cocos’s deeper walls and channels. Whitetip reef sharks, reef fish and the occasional passing pelagic round out the scene.

Marine life

The headline animal is the silvertip shark, when present. Beyond that, Silverado sits within one of the planet’s richest shark ecosystems: Cocos as a whole is famous for enormous schools of scalloped hammerheads, plus Galápagos and whitetip sharks, marble rays, and seasonal whale sharks. Not all of these congregate at Silverado specifically — it is first and foremost a silvertip site — but the surrounding waters brim with big-animal life.

Conditions & who should dive it

The pinnacle itself is one of Cocos’s more forgiving sites — shallow, sandy, relatively sheltered. The demanding part is getting there and diving the wider destination. Cocos is liveaboard-only, and operators typically require an Advanced Open Water certification with around 30 logged dives, because most island sites feature strong currents, surge and thermoclines. Water sits near 24–28°C (76–82°F), but thermoclines are common, so a 3–5 mm wetsuit with hood, gloves and booties is standard. Treat Silverado as a rewarding, calmer interlude within an otherwise advanced trip.

When to go

Cocos dives year-round. The dry, calmer season of roughly December to April brings the best visibility (up to around 25 m / 85 ft). Many shark-focused divers instead choose the rainier May to November window — rougher seas and lower visibility, but the peak for massive hammerhead schools, with whale sharks most likely around May to August. Silvertip sightings at Silverado, by contrast, are unpredictable regardless of season.

Getting there

There is no way to day-trip Cocos. Liveaboards depart from Puntarenas on Costa Rica’s Pacific coast and steam roughly 32–36 hours across open ocean to the island. Trips generally run 8–10 nights with three to four dives a day. A valid dive certification and comfort with blue-water, current-prone diving are essential.

A note on protection

Cocos Island National Park is a UNESCO World Heritage Site and a strictly protected marine reserve — no fishing, no collecting, no touching. The silvertip decline at Silverado is a reminder of how fragile even a protected shark community can be. Dive respectfully, maintain distance, and let the animals come to you.