If you want a cruise and some fantistic good shark dives where you can not feed the sharks and you are on the bottom of food chain.book a liverboard on the undersea hunter leaves out of costa rica to cocos island.long boat ride about 350 miles each way, it does- not get any better.the night dives are to die for. watching hundreds of sharks hunting for dinner and your only a few feet away.no matter where your flash light shines it beam, sharks are allover the place.during the day you can look up from 100 feet down and see schools of 1000++ pound hammerheads above you..senior big whale sharks bigger then the boat.the action does not stop, even while on the deck you can watch birds diving in to get some of the scraps from whats left of the natural bait balls..question is shark dives worth it? these are. been there twice ready to go back again and again. have one friend he has made 12 trips there..www,underseahunter.com