Actinodendron is a genus of cnidarians belonging to the family Actinodendridae. Species in this genusâÂÂoften called âÂÂtree anemonesâÂÂâÂÂfeature striking tentacles that branch fractally like miniature trees, a structure that enhances their predatory reach. These fascinating anemones inhabit sandy or rubble substrates across the Indo-Pacific, and some species, notably Actinodendron arboreum (the âÂÂhellâÂÂs fire anemoneâÂÂ), are highly venomousâÂÂtheir stings can inflict severe skin lesions. ÃÂ
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