Rottnest Island is by far the most popular and well-known dive location in Perth, located off the coast of the city. Ringed with sparkling coves, limestone caverns, shipwrecks and colourful reefs, there’s plenty to explore and multiple dive sites. Warmer water attracts a kaleidoscopic collection of tropical fish, and playful seals often visit the coves. For most divers, the Rottnest Shipwreck Trail is the biggest draw. There are thirteen shipwrecks found around the island and snagged by the coast and corals, the oldest of which dates back to 1842. Most dive operators in the city offer day tours to the island.