In South Florida off of Ft. Lauderdale, me and a buddy spotted a single tentacle creature in about 15 fsw. The approx. 1-2ft. long arm was sort of a purplish blend(no not an octopus arm for sure) with some small pencil eraser sized knobs spread out about every 4 or 5 inches. The arm was about 3-5 inches in diameter and when approached kind of retracted itself under a ledge(we couldn't see the body) like a turtle head.
Any ideas?
Any ideas?