Radioles extending from the branchial stalk of a Spirographis feather duster worm, in the shallow reefs off Bangka Island, Indonesia, Southeast Asia, Asia

Radioles extending from the branchial stalk of a Spirographis feather duster worm, in the shallow reefs off Bangka Island, Indonesia, Southeast Asia, Asia

Close-up of the orange colored plumes of a Christmas tree worm (Spirobranchus giganteus) attached to coral; Maui, Hawaii, United States of America