One of the most heavily visited sites in Lembeh Strait, Nudi Retreat, is a small protected cove with a gentle reef slope at around 3 meters before turning into a sandy slope with two small walls stretching on both sides, covered in soft corals to a depth of 28 meters.
Similar to Nudi Falls, different species of nudibranchs are in great numbers here. Aside from that, various frogfish, cockatoo wasp fishes, Pegasus-sea moths, and batfish can also be spotted here. During the night dive, it is expected to encounter coral cat sharks.
Compared to most of the dive sites in Lembeh Strait, the amount of healthy soft corals and anemones is abundant, making it the ideal environment for anemone fish and pygmy seahorses.