The swarm is a pain to get them to it but besides that it's easy. Swim around find a swarm, swim backward so.they can keep up with u. Get them near and boom. U have to kill sabers and those passive fish every 3 seconds or so so be ready with a sarco or something. Get 2 scuba tank and a otter an u'll be fine. Be careful not to attack the swarm or turtle when fighting off sabers. The turtles give oxygen and stamina off so that's in case of emergency. Make sure they aren't stuck on something because that stopped me from taking them twice. Don't know why but it did. Now u got a big a turtle for ur turtle needs