Navy Island

Navy Island is a small island and a well-known marine activity destination located near Trincomalee on the east coast of Sri Lanka. The site is especially popular for scuba diving and snorkeling, thanks to its clear waters, vibrant coral reefs, abundant fish life, and unique underwater landscapes featuring small caves and igloo-like rock formations, making it an ideal spot for both beginners and experienced ocean lovers.

What It Is ?

Navy Island is a popular dive and snorkel site located just off the coast of Trincomalee. Local dive centres regularly operate boat trips to the island, allowing visitors to explore coral reefs, rich marine life, and shallow underwater features that are suitable for all experience levels.

The site is ideal for fun dives, beginner courses such as Discover Scuba Diving, training dives, and relaxed reef snorkeling. Easy access and calm conditions make it one of the most frequently visited marine activity spots in the Trincomalee area.

🐠 Marine Life & Activities
At Navy Island, visitors can typically encounter:
Healthy and vibrant coral reefs
A wide variety of tropical reef fish, including clownfish and angelfish
Sea turtles
Occasional sightings of rays and reef sharks in deeper areas
Navy Island is also commonly included in combined whale and dolphin watching tours, with snorkeling stops around the island’s coral gardens.

🧭 Why It’s Called “Navy Island”
The name Navy Island is believed to originate from its proximity to the Sri Lanka Navy and the Trincomalee harbour area. Trincomalee is home to one of Sri Lanka’s most important natural deep-water harbours and has long held strategic naval significance, dating back to colonial times.