Speedo Boy
Go to shiptown. At the bottom of the town there are 2 homes. In one of the homes there's a swordfish. Talk to him and then go to the beach and talk to him again there.
Good Boy
Go to the other home in Shiptown and talk to the crow over there.
Too Big
Talk to the red orc in Shiptown (East, near the docks). He gives you a letter which you will give to a green lizard. Talk to red orc again and they should both be gone. Go to the inn in Shiptown and go to the left-most door (it's a storage) you can find them both there and the event should play when you get closer.
MANta Ray
Go to the right-most building in Shiptown (Pretty tall building, where the red orc is) There are stones at the Northern part of the building. Go there and Wulfrick will throw you through the window.