Sharks Cove is a lava-rock cove on Oahu's North Shore, inside the Pupukea Marine Life Conservation District, and it's widely rated the island's best shore-entry snorkel after Hanauma Bay. From roughly May through October the surface goes glassy-calm and visibility opens to 10–20 m, so the shallow 1–5 m reef and tide pools fill with schooling reef fish, octopus and green sea turtles (honu). Despite the name there are essentially no sharks here — but in winter, North Shore swells of 10–30+ ft wash over the cove walls and make it far too dangerous to enter. As of 2026 it remains free to access, with dive shops nearby for gear rental.
Lava reef and tide-pool terrain that starts shallow — easy for first-timers to ease into
Rich marine life: schools of reef fish, octopus and green sea turtles
Clear summer water with 10–20 m visibility and a lake-calm surface
Caves, arches and lava channels that make for fun, easy exploring
A protected fishery (Pupukea MLCD) means the fish are abundant and unafraid
Good to know
SeasonBest in summer (roughly May–October). From about September through April, North Shore swells of 10–30+ ft break over the cove walls and even the tide pools turn dangerous — don't snorkel here in winter.
SafetyThere are no lifeguards (the nearest is at Sunset Beach). Always snorkel with a buddy and stay inside the sheltered cove.
SafetyA calm morning can turn choppy within hours. Watch for currents and surge that push you seaward, and don't venture out past the cove.
SafetyThe entry is sharp, slippery lava rock. Wear reef or water shoes, and watch your footing for sea urchins wedged in the crevices.
RulesInside a Marine Life Conservation District, taking fish or coral and feeding marine life are illegal. Never touch or stand on coral or tide-pool creatures.
RulesHawaii law bans sunscreens containing oxybenzone or octinoxate. Use reef-safe products or cover up with a rash guard.
MannersGreen sea turtles (honu) are legally protected. Keep at least ~3 m (10 ft) away and never touch or feed them.
Practical info
It's about an hour's drive from Waikiki, at Pupukea Beach Park, with free parking and restrooms; it's a beach entry, so there's no admission fee. Visit in the May–October summer season for safe conditions, and rent gear at a nearby dive shop or join a guided tour. Confirm current prices, hours and the day's surf conditions before you go.
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