Beginner Seychelles
Seychelles
Granite blocks underwater, a seafloor unlike the typical tropical reef
Almost every tropical island in the world is volcanic or coral. These are continental granite, a piece of ancient crust left behind when the continents split apart. Underwater, that translates into something uncommon in tropical diving: giant rounded blocks stacked together, forming caves, arches, and swim-throughs.
In this profile you'll find out why the Seychelles seafloor is geologically unique, how the cycle of two monsoons shapes the season and visibility, when the whale shark shows up, what separates the inner islands from the remote atolls, and what level each zone requires.
This is a low-difficulty destination with a very distinctive underwater landscape of granite boulders, and at the same time one of the places where recent decades' coral bleaching is most clearly visible.
Geography and access
The archipelago has two distinct natures. The inner islands, around the main one, are granite: remnants of an ancient microcontinent, with white sand beaches among rounded rock blocks that continue underwater.
The outer islands are of coral origin, atolls and sandbanks, and are much farther away, hundreds of kilometers out. Among them is a huge, remote atoll declared a World Heritage Site, with very restricted access and practically reserved for expeditions.
That split matters for planning: the inner islands hold nearly all the accessible diving, with daily boat trips from several islands and short transfers. The outer islands require long transfers (by light aircraft to some islands or on long-haul liveaboards) and a high budget.
International access is through the main island's airport, with air or sea connections to the other inner islands. Internal transfers are short.
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