Some kind of underwater thingy Published Thu October 2, 2008 at 800 × 600 in Divemaster day 15 I need a reference book… these things start as small as a thimble and get up to the size of your hand. They’re very flexible, not stuff like coral. Share this:TweetShare on Tumblr Click to email a link to a friend (Opens in new window) Email Click to print (Opens in new window) Print