Twin Lagoons. Located on the northwestern tip of Coron Island. The water here is deep and peaceful so it's very ideal for kayaking and snorkeling. The second lagoon is accessible via an opening from the outer lagoon. You have to dive if it's a high tide and the opening is totally submerged.
This is probably my favorite place visited in Coron.
Twin Lagoon is an enclosed lagoon surrounded by the jagged limestone cliffs that abound the Coron Island. There is a small opening to get inside the lagoon where swimmers passes by to get inside the lagoon. It is sometimes submerged though and you need to dive to get in. Inside the lake is a deep body of water from side to side of the cliff. If you snorkle, go to the wall of the lagoon to see coral formations on the wall. Its sometimes eerie to snorkle as you go inside the deepest portion of the lagoon. The water mixes with fresh water from the island thus creating the "alcohol and water mixture" like appearance in the water. On your way to the Twin Lagoon, you will pass by some of the pearl farms in Coron.