Thx for the great comment. We didn't have the time to really test the level. At first we made 3 level with progressive difficulty but on Sunday, decision was made to just made 1 complete level by lack on time. So i had to rush the level and had no time to test it. If i remember correctly there's 8 chests total, you can grab all on the left in one dive and drop it at the ship and do the same for the right side.