Eucheuma arnoldiiis commonly referred to as Mottled sea club. Difficulty in the aquarium: There are no reports available yet that this animal has already been kept in captivity successfully. Toxicity: Toxic hazard unknown.
Very special thanks for the first two photos of the Coral-mimicking alga (Eucheuma arnoldii) to Dr. Zoe Richards, Research Associate | Hard Corals | Department of Aquatic Zoology
Research Fellow | Curtin University, Western Australian Museum, Australia.
This interessting species was found in the Ashmore Reef National Nature Reserve, northern Western Australia, in a depth between 12 and 14 meters.
Eucheuma arnoldii is a mimetic species of red algae that resembles branching Acroporas (staghorn corals), and not only in assuming their morphology, but also perfect their colouration and the lighter growth tips.
Eucheuma arnoldii signals predators that is an inedible hard coral!