The 8 Plankton Night Swims in Thailand That Earn Their Price

1.Krabi 4 Island Sunset Snorkeling Cruise + Bioluminescent Swim

★★★★★★★★★★5.0 · 1,861 reviews · from $130Our pick

Join Michael and his crew for a relaxed 6 to 7 hour cruise from Ao Nang or Railay aboard a century-old Thai wooden junk. Snorkel, kayak, paddleboard, eat a Thai buffet, and watch the sunset before a short after-dark swim with bioluminescent plankton. The boat carries quality gear, snacks, drinks, and up to 24 people.

“The best in the sea! Micheal was a spectacular host, very helpful and accommodating. Snorkeling experience was just magical. The boat is very cool and spacious. Dinner after sunset was delicious. Floating snacks, fruits and drinks throughout the whole trip. Highly rate this trip one of my favourite experiences.”

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2.Krabi: Bioluminescent Plankton, Snorkeling & Sunset Tour

★★★★★★★★★★4.3 · 863 reviews · from $40

Spend 6 to 6.5 hours visiting Krabi’s island beaches, the Phra Nang Cave Shrine, Tup Island, Chicken Island, and Ko Poda. You’ll snorkel, swim, watch the sunset, eat a Halal BBQ, and look for bioluminescent plankton after dark. Guides such as M, Selena, and Hikari have been praised for their energy and care.

“This tour was the highlight of my trip. Like most tours, it started with feeling like a herd of cattle in a midst of confusion but once we were on our boat, all was good. Our guide Pichi (Peachy?) was full of energy and spoke great English. The sunset was incredible, the activities were spaced out nicely, the food was delicious. We swam with the bioluminscent plankton under the stars. Just magical. I obviously highly recommend this tour.”

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3.Krabi: 7 Islands Sunset Tour with Plankton Swim and BBQ

★★★★★★★★★★4.0 · 808 reviews · 7 hours · from $49

Spend seven hours island hopping from Krabi by long-tail boat or speedboat, with stops near Phra Nang, Railay, Chicken, Poda, Tup, and Koh Tan Ming. Guides such as Cha, Ming, Nicky, and Rainbow lead snorkeling, sunset, BBQ, and a night swim with bioluminescent plankton. Expect a full, social day and simple beach conditions.

“Everything with this tour was great. We loved it. Thank you”

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4.From Phi Phi Island: Maya Bay Sunset & Plankton by Speedboat

★★★★★★★★★★4.6 · 555 reviews · from $46

Join guides such as Adam, Courtney, or Coco for a half-day speedboat trip from Phi Phi Island. Visit Monkey Beach, Pileh Lagoon, Viking Cave, and Maya Bay, then watch sunset and snorkel with bioluminescent plankton. Snorkeling gear, park fees, fruit, water, and soft drinks are included.

“it was wonderful day. you absolutely need try this. Thanks to crew 🖤”

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5.Krabi: Railay Phra Nang & Diamond Cave Sunset Plankton Tour

★★★★★★★★★★4.5 · 373 reviews · 5 hours - 390 minutes · from $28Best value

Take a guided afternoon boat trip from Krabi to Railay and Phra Nang Beach, walk to Diamond Cave, and enjoy sunset free time before seeing bioluminescent plankton from the boat. English-speaking guides such as Jess, Peter, Leen, and Nina lead small groups, with fruit, drinks, and hotel pickup included.

“Great day, tour guide was brilliant... Day felt very relaxed and not rushed. The Bioluminescence Plankton was an amazing experience. Nice snacks and fresh fruit provided. One of the best tours I have ever been on!!”

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6.Phi Phi: Maya Bay, Bamboo Island & Plankton Full-Day Tour

★★★★★★★★★★4.6 · 255 reviews · 9h 30m · from $69

Set aside 9.5 hours for a fast-moving Phi Phi tour by speedboat. You will visit Maya Bay, Pileh Lagoon, Bamboo Island, Viking Cave, Monkey Bay, several snorkel stops, and a sunset plankton swim. Guides such as Solomon and Coco Loco are known for keeping the day lively and helping swimmers find marine life.

“Amazing experience with awesome crew. The only thing I’d change is to add fins for the snorkelling parts.”

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7.Krabi: 7 Islands Sunset Hopping Cruise with BBQ & Plankton

★★★★★★★★★★4.4 · 250 reviews · from $37

Spend an afternoon and evening island hopping from Ao Nang, Klong Muang, or Tubkaek Beach. Visit Railay, Thale Waek, Chicken, Poda, and Tang Ming, with snorkeling, fruit and drinks, a beach BBQ, sunset views, and optional night swimming with bioluminescent plankton. Guides such as Jess, Palm, Bee, and Peter are known for friendly service and helpful photos.

“Aslan was our tour guide and he is amazing. My parents are a bit elderly so to get off the boat and on was a challenge but Aslan and his team were amazing at the boat. We were never short of food and water. We came back to the hotel really full. He is a masterchef as well!”

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8.7 Islands sunset tour plus bioluminescent plankton + BBQ

★★★★★★★★★★4.3 · 21 reviews · 6 hours · from $41

Spend six hours visiting Tup Island, Chicken Island, Ko Poda, Phra Nang, and Ao Nang by boat. You’ll swim, snorkel, watch the sunset, eat a Halal BBQ, and look for glowing plankton. Hotel pickup, equipment, snacks, drinks, insurance, and an English-speaking guide are included, though tide, weather, moonlight, and group size affect the experience.

“really cool to see the plankton. dinner could be better”

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