Name: Tup Island
Location: Ao Nang, Mueang Krabi
Type: Island
Photo dated: 5th February 2014

Tup Island also known as Tub Island, Koh Tap or Koh Thap is one of the most popular offshore islands around Krabi for day trips and tours. Most island hopping tours come here to witness and photograph the amazing parting of the seas. At low tide a sandbar emerges from the clear waters linking the larger Chicken island to the two smaller islands of Koh Mor and Koh Tap. This picturesque and unique occurrence is commonly referred to as Talay Waek; which means divided sea or separated sea.

Source:
https://www.phuket-travel-secrets.com/tup-island.html.