Nusa Lembongan, Nusa Penida, Nusa Ceningan are located in the southeast part of Bali. These place are popular for sea walking and Mola-Mola (sun fish) hunting. This should be a thing to do when you travel in Bali, especially in Kuta/Sanur/Nusa Dua.
Location: Bali Province, Indonesia
Main Island: Bali
Pros: awesome view of both the beach and underwater, accessible, a lot of local boats and tours to get there, good infrastructure, good tourism facilities.
Cons: very touristy, a bit expensive tour
How to Get There: Take a boat or tour from Sanur Beach, Bali.
Next, 2. Kiluan Bay