Twin Rocks is located in Anilao, Batangas, Philippines.

The place is number one choice of professional underwater photographers, because in just one small area around the two big rocks you'll get what you need, a good photos of macro, wide, dome etc. Here you will find three colors of ribbon eel, black and white small frog fish occasionally yellow, a pair of mating devil fish, hundred kinds of nudibranch, some gobbies, anteas, lots of clown and anemone fish with multiple color of anemone, and lots, lots of fishes, from big size bat fish and surgeon fish, school of yellow tail barracuda and blue lined snapper fish, rabbit fish and many more. The good thing is you'll find all these in not more 15m./50ft. deep of water. The dive here can be one way or returns to the boat depends on the current that sometime slight to moderate normally moving to the south but switching direction sometimes. Underwater you will see a capsized barge and a two big rocks which is less than one meter apart that resembles its name twin rocks. The remains of a capsized barge lie here on a gradual slope, with sponges, algae, hydroids, feather starts and small reef fish, sometimes shoals of barracuda and squid are seen.

Source:

Mabini.gov.ph