On the occurrence of Antillesoma antillarum (Grube, 1858) (Sipuncula, Antillesomatidae) on the south-central part of the Colombian Caribbean coast

We document here the first confirmed report of the sipunculan worm Antillesoma antillarum (Grube, 1858) based on freshly collected, taxonomically verified specimens from the south-central Colombian Caribbean coast. This species was encountered on massive coralline rocks, coral rubble, and coral boulder at San Antero. We briefly describe and illustrate this species and provide notes on its distribution, ecology, and habitat.