Malapascua offers over 20 different dive sites to choose from. However the most well known dive is the early thresher shark dive at Monad Shoal. Thresher sharks are a deep water shark and are very rarely seen by divers. Malapascua is the only place in the world they can be seen every day at the cleaning stations (where the sharks go to get rid of the parasites on their skin by other fish). They are very distinctive with their long tail, which is about half of their body length.
There are also sightings of giant manta rays, eagle rays, etc. sometimes come so close you could almost touch them. Sometimes you will be lucky enough to see them on the same dive as a thresher shark. Whitetip sharks also grow very large and close encounters are almost guaranteed at Gato. Hammerhead sharks are around from December to April although these are less common. Also get devil rays and marble rays. Other very occasional visitors include turtles, whale sharks and once there was even a tiger shark!
Gato Island is another very famous Malapascua dive site. Gato has a great variety of creatures – seas snakes, cuttlefish, seahorses (large and pygmy), frogfish, 100’s of nudibranchs, loads of macro and good soft coral.
Malapascua is also very well known for incredible macro at all its dive sites. You can see many types of shrimps and crabs, including harlequin shrimp, ghost shrimp and xeno crabs. Pipefish are all around including several types of ghost pipefish. Also expect to see various types of cuttlefish, octopus (including blue-ringed octopus), moray eels, frog fish, to mention just a few. The night dive is spectacular, with mandarin fish mating all over the place, seahorses, bobtail squid, seahorses, and huge crabs and sea stars. Mimic and blue ring octopus can be seen as well as the occasional stargazer and hairy frogfish. Some have said the muck diving rivals Lembeh Straits.
There are several wrecks at various depths for all levels of divers from beginner snorkelers to technical divers including a couple from WWII.
Between November/December/January the visibility is reduced to 5-10 m. due to high plankton density which gives the water a greenish look although it is in this season where you can spot more Manta Rays. The rest of the year you can expect to find between 15 to 30 m. visibility. The water temperature ranges from 27°C to 30°C. However, from December to February it can drop to 25°C.