Get picked up by an air-conditioned minivan from your accommodation on Koh Phangan and reach Thong Sala Pier.
Before starting your speed boat escape to Koh Tao, enjoy a light breakfast.
The first stop, depending on the tides, can be either at Lighthouse Bay, Mango Bay, Tanote Bay, or Ao Hin Won, all these spots will give you a great snorkeling experience in the coral reef, and crystal clear waters.
You will then continue to the island of Koh Nang Yuan, that's made out of three little lands connected by a massive sandbar; before exploring these islands, you will enjoy a buffet style Thai lunch in a beachfront restaurant.
In the afternoon, you will return to your accommodation, filled up with a lot of new memories of your Thai vacation.