Achaeus japonicus, sometimes known as the orang-utan crab, is a crab of the family Majidae (spider crabs or decorator crabs) has been observed in tropical waters of the Western Pacific Ocean from Indonesia to Fiji, as well as in coastal waters of Japan. With a carapace of only about 2 centimetres or 0.8 inches in diameter, it has relatively long arms, which are thickly covered with fine hairs, red or reddish brown in colour, and often laden with small bits of debris for further camouflage. It is frequently, but not always, found in association with the bubble coral Plerogyra sinuosa.

[Wikipedia
Facts about Cabilao Island at "Panggangan Wall"

• It is in Philippines
• Cabilao Island at "Panggangan Wall" is in the Philippine Sea.
• The typical depth is 0-20 Metres 0-60 Feet.
• The typical visibility is 3-10 Metres 10-30 Feet.