Tup Island also known as Tub Island, Tap Island or Thap Island is one of the most popular offshore Islands Around Krabi for day trips and tours. Tap Island is located in the Mu Koh Poda archipelago just south west of Ao Nang between Poda Island and Chicken Island. Tup is much smaller than the other islands in the group, however it has a nice beach and the waters that surround it provide an excellent spot for snorkeling with an abundance of tropical fish.