The seabed along this section of the coast under the archipelago features a landslide that plunges down to a depth of more than 40 m, as well as numerous rock ciliates that reach out towards the centre of the channel like fingers. The seabed thins out towards the centre of the channel. From the shoreline down to about ten metres below the surface, the seabed consists of a large platform made up of isolated boulders. Beyond the edge, at the end of the shoal, its morphology changes into that of an enormous landslide consisting primarily of small rounded boulders. After this strip, which ends at a depth of about 3 m, you will find larger and more isolated rocks. From the underwater slope, protrusions of rock that stick into the sand can be sporadically seen all over the bottom of the channel.

This is the point at which extra time can be dedicated to exploring the passageways between the large boulders.