Xenocarcinus depressus (Miers, 1874)
Relatively common throughout the Solitary Islands Marine Park. Known from New Guinea, Indonesia and Japan. In Australia recorded from tropical waters in Northern Territory and Queensland as well as southern NSW.
Commonly found on the fronds of gorgonians.
Not often seen due to its cryptic colouration, only close examination of the host will reveal its presence. Grows to around 14mm carapace length.