100 Degress East Diving & Snorkeling
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A warm welcome to Koh Samui
and the 100 Degrees East Marine Team


100% committed to the delivery of quality assured marine tours and a personal service with attention to detail. Day in day out, our mature and friendly team endeavor to exceed your expectations and provide marine tour experiences that will be a highlight of your holiday.

Our tours encompass all the top destinations in the Gulf of Thailand - Angthong National Marine Park, Koh Tao and Koh Phangan, so whether your interests lie above or below our beautiful tropical waters 100 Degrees East will take you there in safety and comfort.

  • Samui's Original 5 Star Marine Tour Operator

  • Environmentally Aware

    • Regular beach and ocean clean ups in conjunction with Trash Hero
    • Samui's first plastic free marine tour operator - no more plastic water bottles!
    • Proud supporters of Samui Elephant Sanctuary