Spend a free day today however you’d like – swimming, lazing in the sun or actively exploring. You might like to take an optional day tour to Ang Thong Marine National Park by either slow boat or speedboat. The park is an archipelago of over 40 islands in the Gulf of Thailand, featuring pristine beaches, jungle, mangroves and limestone mountains rising out of the sea. Swim at popular Ko Mae Island and check out the saltwater lagoon of Thale Nai (Emerald Lake). For a quieter experience and some great snorkelling opportunities, head to the nearby islands of Ko Tao and Ko Nang Yuan. Ko Samui is also home to an elephant sanctuary, and you can come close to these gentle giants. Watch them bathe, roam the fields and socialise with other elephants, knowing they are in a caring and peaceful environment.