I was aboard the Solmar V in early December. It was Manta Madness. We had up to 7 flying carpets on one dive. I was told to make lots of noise. Apparently mantas like that sort of thing. I tested it. A manta came by, I sang and screamed, it circled and circled. Same manta came by later in the dive. I was mute. It slowly glided by. Even later in the dive, said same manta approached, I sang and screamed (some say it's the same). Said manta circled and circled. I was perplexed why are the manta approaching us bubble breathers? We don't offer food nor cleaning. We aren't even allow to touch them. I think they're just as perplexed at insane bubble breathers. A behavior I thought interesting, they would unwind their cephalic lobes in my face, and wind them back up. I wasn't sure what was proper etiquette was, so I just sang and screamed. Also, the manta with no tail, would come straight at me (and others), shoot straight up. Then like a stalled biplane, drop back down. Recover and do it again. I had always thought that mammals only did things for FUN. I was wrong, these guys may have had more fun the we had.