Tobago Cays
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Dive Site

Tobago Cays

Clifton, Union Island · The Grenadines · Saint Vincent and the Grenadines
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Overview

The Tobago Cays are a cluster of five small, uninhabited islands in the southern Grenadines, protected as a marine park and widely considered one of the most beautiful anchorages in the Caribbean. Horseshoe Reef, a crescent-shaped barrier reef, wraps around four of the five cays, sheltering a turquoise lagoon of exceptional clarity that is home to a thriving population of green sea turtles. The snorkelling inside the reef is among the finest in the Eastern Caribbean. Green turtles graze on the seagrass beds in water barely two metres deep, seemingly unconcerned by the snorkellers floating above. Patch reefs within the lagoon host parrotfish, blue tangs, French grunts, and queen conchs moving slowly across the sandy bottom. The clarity of the water -- visibility regularly exceeds 20 metres even inside the lagoon -- creates an almost surreal experience of floating above a Caribbean postcard. The outer reef offers a different character entirely. Here, the reef drops off into deeper water, reaching 20 metres on the seaward side. Healthy hard and soft corals cover the slope, providing habitat for a greater diversity of species. Eagle rays glide along the reef edge, nurse sharks rest in sandy alcoves, and schools of jacks and barracuda hunt in the current. The contrast between the tranquil inner lagoon and the more dynamic outer reef means the Tobago Cays offer something for every level of diver. The marine park was established by the St. Vincent and the Grenadines government to protect this irreplaceable ecosystem. Access is by boat from Union Island or neighbouring islands, with day trips readily available. A marine park fee supports conservation efforts. The cays are uninhabited with no permanent structures, adding to the sense of exploring a truly wild place. The combination of turtle encounters, pristine reefs, and jaw-dropping scenery above and below the water makes Tobago Cays one of the Eastern Caribbean's essential diving and snorkelling destinations.

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Marine life

green sea turtle
nurse shark
eagle ray
southern stingray
parrotfish
blue tang
French grunt
queen conch
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Dive profile

DEPTH PROFILE

DEPTH PROGRESSION & WAYPOINTS: Tobago Cays

MAX DEPTH:20M
WAYPOINTS:5
0M0M5M5M10M10M15M15M20M20MSEA SURFACEEntry0MDeep level20MMid level12MShallow level6MSafety stop5M
* PLOT SHOWS DIVE PROGRESSION SEQUENTIALLYDiveOne Club Profile v1.2
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Location

Near Clifton, Union Island, in the The Grenadines region of Saint Vincent and the Grenadines.

LAT: 12.627000
LON: -61.358000
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Frequently asked questions

Can you swim with turtles at Tobago Cays?

Yes, Tobago Cays is one of the best places in the Caribbean to swim with green sea turtles. The turtles graze on seagrass beds inside the reef and are accustomed to snorkellers. No touching is allowed, but the turtles often swim within arm's reach. The shallow, calm lagoon makes the experience accessible to all.

How do you get to Tobago Cays?

Tobago Cays are reached by boat from Union Island, Mayreau, or other Grenadine islands. Day trips run from Union Island and take about 30-45 minutes. The cays are uninhabited with no facilities, so bring everything you need. A marine park fee applies.

What is the diving like at Tobago Cays?

Inside Horseshoe Reef, the shallow lagoon is perfect for snorkelling with turtles over seagrass and patch reefs. The outer reef offers more dramatic diving with hard and soft coral gardens, a drop-off into deeper water, and encounters with eagle rays, nurse sharks, and large schools of reef fish. Depths range from 3 metres inside to 20 metres on the outer wall.

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Data Provenance

This profile is compiled from 3 operator submissions and 142 community logs. Key facts (depth, entry) are verified against official hydrographic charts.

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