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A large bay where lots of sport activities such as fishing take place.
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Sai Kaew Beach, Diamond Beach
One of the most beautiful and most popular beaches on Ko Samet, Hat Sai Kaew is 1 km long and 25–30 m wide. Most of this space is taken up with deckchairs from the restaurants. Hat Sai Kaew, which literally means "crystal sand beach", is filled with activities. Visitors can enjoy sunbathing, swimming, jet skiing, windsurfing (700 baht/hr), catamaran sailing (1,000 baht/hr) a banana boat or even partying at night. It can get a bit noisy due to all the motorized activity though. It can also get crowded, especially on weekends.
Separated from Hat Sai Kaew by a small rocky sea point where there is a mermaid statue. The beach is half the size of Hat Sai Kaew. There is some monk's accommodation along this stretch of sand which explains the signs asking people to be quiet. It makes for a peaceful spot just past the noise polluted Hat Sai Kaew Beach.
Two beaches down from Hat Sai Kaew. More or less of the same white, sandy stretches with a few nice restaurants at night and a big, concrete block of a bar where most party goers end up late at night. Revelers can make this beach a little noisy, but much less so than the busier Hat Sai Kaew.