Minor side effects and normal behaviours recorded in tagged sea cucumbers.
(A) Sea cucumbers tagged in the body wall showing ripples (arrows) around the implantation area immediately after tagging. (B) Large sea cucumbers tagged in the tentacles showed normal feeding, extending their tentacles fully and alternatively inserting them into the mouth. (C) A female sea cucumber tagged in the tentacles is releasing oocytes, visible as a reddish string (arrow), 40 days post tagging. (D) Water clouded with sperm in a tank holding sea cucumbers tagged in the body wall. Scale bars represent 3 cm.