It is often called the premier nudibranch dive site in the world, and Nudi retreat definitely lives up to this claim. It is also nicknamed the spa for nudibranchs and the shallow areas are covered with gorgeous coral bowls and anemones, and this then turns into a sandy slope with encrusted boulders down below. There are two walls stretching out to either side, sporting healthy soft coral growth right up to only 2 metres in depth. The prime attractions are the nudibranchs but divers can also find pygmy sea horses and sea moths along with attractive underwater scenery and a stunning variety of marine life.
Nudi retreat is a year-round site with the dry season lasting from July to October being the best diving season. The water temperature averages 26-29C/79-84F, while the air temperature ranges 30-35C/86-95F. The dive site is shallow with a maximum of 28 metres; much of the dive exploration can take place at depths of as little as 2 metres. Visibility is normally very good, ranging from 10 metres to 30 metres. This small dive site is found in a protected cove that creates the perfect home for the corals and Nudibranchs.
The tiny nudibranchs are neighbours to Pegasus sea moths, juvenile flamboyant cuttlefish, and boxer crabs. Another common marine creature sighted on this much-loved site is the blue ring octopus. Although their venom can be deadly, they are not aggressive unless they are provoked. About 50 metres north of the site, on a beautiful wall covered with soft corals divers, can see some Coleman shrimp that live on poisonous sea urchins.