Situated in Matnog, Sorsogon and part of the island tour itinerary when going to Subic Beach and Tikling Island. Juag Lagoon is a privately owned Fish sanctuary maintained by the Geneblazo family. Their native hut was built on a sandbar standing through stilts in the middle of the lagoon, which is surrounded by fish pens spread across the area. It was opened to tourists to give awareness and educate the public about preserving marine life. 

The sanctuary prides itself with crystal-clear blue waters, teeming with a wide variety of sea creatures including lobsters, coral fishes, giant clams, grouper, sea turtles and many others. Visitors can feed the fish in the sanctuary with fish pellets sold at the entrance.