These spider crabs are relatively common throughout Southeast Asia. They resemble another type of undescribed Oncinopus sp., which is hairy and are commonly referred to as orangutan crabs (often incorrectly identified as Achaeus japonicus, which is a different species). These crabs do not have hair, however. They appear spongy, ranging from pale red to yellow in color. In addition, their eyes are white, whereas the eyes of orangutan crabs are red. These crabs also tend to be out in the open, while orangutan crabs are most often found in association with bubble coral or anemones. The stance, demeanor and gait of these crabs remind me of King Kong, hence my nickname for them, King Kong crabs.
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