KRABI BIOLUMINESCENT PLANKTON TOURS

The 15 Best Bioluminescent Plankton Tours in Krabi

29 tours  ·  from $28

The plankton light up when you move through them, and it only works on dark nights. These 15 pair the swim with a sunset cruise or a barbecue on deck, and the ones worth booking publish which nights of the month they run.

Krabi 4 Island Sunset Snorkeling Cruise + Bioluminescent Swim - Boarding in Ao Nang or Railay
Cruises & Boat Tours, Evening Experiences, Krabi Bioluminescent Plankton Tours, Krabi Four Islands Tours, Krabi Snorkeling Tours, Snorkeling, Tour Reviews

Krabi 4 Island Sunset Snorkeling Cruise + Bioluminescent Swim

1.Krabi 4 Island Sunset Snorkeling Cruise + Bioluminescent Swim

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

Join Michael and his crew aboard a spacious wooden junk for a relaxed afternoon around Krabi’s islands. Snorkel, kayak, paddleboard, eat a Thai buffet, watch the sunset, then swim near Phra Nang Cave Beach as bioluminescent plankton flashes around you.

“Probably one of the best things money can buy. I had the best day ever. The crew and ship are awesome and Thailand is sick”

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Krabi: Bioluminescent Plankton, Snorkeling & Sunset Tour - Phra Nang Cave Shrine sets the tone
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Krabi: Bioluminescent Plankton, Snorkeling & Sunset Tour

2.Bioluminescent Plankton, Snorkeling & Sunset Tour

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

Spend 6 to 6.5 hours touring Krabi’s islands by speedboat with an English, Thai, or Malay-speaking guide. You’ll snorkel near Chicken Island, walk Tup Island’s sandbar, eat a halal BBQ on Ko Poda, and look for bioluminescent plankton after dark. Guides such as M, Selina, and Pichi have earned praise for their energy and care.

“We really enjoyed this tour, we visited great islands, snorkelled with amazing fish and watched the sunset on a great beach! There is plenty of time at all the stops and the tour is a perfect length. Our guides were all really nice! The boat wasn’t too crowded / the islands weren’t too busy! Dinner was very good, lots of options and plenty of food! The plankton was an unexpected highlight :)”

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Krabi: 7 Islands Sunset Tour with Plankton Swim and BBQ - The afternoon route through Krabi’s famous islands
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Krabi: 7 Islands Sunset Tour with Plankton Swim and BBQ

3.7 Islands Sunset Tour with Plankton Swim and BBQ

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

Spend seven hours island hopping by long-tail boat or speedboat, with stops at Chicken Island, Koh Tan Ming, Poda, Tup, Railay, and Phra Nang. You will snorkel, eat a beach BBQ, watch the sunset, and swim for bioluminescent plankton. Guides such as Cha, Vee, and Ming are known for keeping the day lively.

“Amazing trip, really looked after you and made sure you had plenty of food and water. The islands were beautiful, our guide was really funny and told us some history at each island. Poda island is as beautiful and the BBQ was good food too. Would recommend!”

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Krabi: Railay Phra Nang & Diamond Cave Sunset Plankton Tour - Phra Nang Cave and the beach between the cliffs
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Krabi: Railay Phra Nang & Diamond Cave Sunset Plankton Tour

4.Railay Phra Nang & Diamond Cave Sunset Plankton Tour

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

You’ll cruise from Krabi to Railay, walk to Phra Nang Cave, visit Diamond Cave, and enjoy sunset beach time before seeing bioluminescent plankton after dark. Guides such as Jess, Peter, Nina, and Leen are praised for friendly care, clear explanations, and practical help in the water.

“I'm happy with the guide and transportation. The guide also provided good explanations.”

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Krabi: 7 Islands Sunset Hopping Cruise with BBQ & Plankton - Phra Nang Cave and Beach: a scenic first stop
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Krabi: 7 Islands Sunset Hopping Cruise with BBQ & Plankton

5.7 Islands Sunset Hopping Cruise with BBQ & Plankton

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

Spend an afternoon and evening visiting Krabi’s island highlights, from Phra Nang and Thale Waek to Chicken and Poda. Your English-speaking guide, such as Jess, Palm, Bee, or Peter, handles the day while you snorkel, eat a BBQ dinner, watch sunset, and look for bioluminescent plankton.

“Great, guide was so friendly and made sure everyone was okay!”

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4 Islands Sunset + Plankton, Semi-Private Tour only 12 Guests - Tup Island brings swimming and shallow-water snorkeling
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4 Islands Sunset + Plankton, Semi-Private Tour only 12 Guests

6.4 Islands Sunset + Plankton, Semi-Private Tour only 12 Guests

★★★★★★★★★★5.0 · 166 reviews · from $81

Spend about seven hours exploring Poda, Tup, Chicken Island waters, Phra Nang Cave Beach, and Railay with a group of no more than 12. Your guide, often Hat or Joy, handles the route, food, drinks, snorkeling gear, and hotel transfers. The highlight is night snorkeling with glowing plankton.

“Traveled with family & we were only in Krabi/Aonang for 2 nights. We had a fantastic guide, beautiful locations, refreshing snacks, and we had so much fun! The plankton experience was very cool too!”

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Krabi 7 Islands Snorkeling & Plankton Night by Big Longtail Boat - Leaving Nopparat Thara Pier around noon
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Krabi 7 Islands Snorkeling & Plankton Night by Big Longtail Boat

7.Krabi 7 Islands Snorkeling & Plankton Night by Big Longtail Boat

★★★★★★★★★★4.0 · 164 reviews · from $52

Spend 7 to 8 hours around Krabi’s islands on a large longtail boat with an English-speaking guide. Snorkel at Ya Wa Sam, Chicken Island, and Ma Tang Ming, walk the Thale Waek sandbar, eat dinner at Poda Island, then swim among bioluminescent plankton near Koh Rang.

“If you’re ready for a super relaxing time on the water with some good swimming, good snorkeling and beautiful views of the majestic rocks, this is your tour. Had a nice time with my adult kiddos enjoying the wonderful country of Thailand and Krabi is a not miss place.”

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Bio Luminescent Swimming From Krabi - Ko Ya Wa Sam begins the snorkeling
Krabi Bioluminescent Plankton Tours, Tour Reviews

Bio Luminescent Swimming From Krabi

8.Bio Luminescent Swimming From Krabi

★★★★★★★★★★3.5 · 85 reviews · from $43

Spend six hours island hopping from Krabi, Ao Nang, or Klong Muang, with snorkeling at Ko Ya Wa Sam and Ko Ma Tang Ming, Poda Island, Chicken Island, sunset dinner, and a night swim at Ko Daeng. A guide, boat, gear, water, fruit, and hotel transfers are included.

“It was a bit disorganized (for boarding and going back to our hotels), but over all was a nice trip and the staff was very kind and helpful. We had a storm (that they knew would happen) and we still went - so we all ended up drenched - our stuff and bags too because to boat didnt had windows/walls (only a cheap roof). We were cold for the rest of the night. We had no fire show on the beach. This isnt a bbq either, but the food was good still. We did see the planktons very well because the clouds were covering the moon.”

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Krabi: Railay Beach Bioluminescent Plankton Ferry Cruise - Caves, coves, and limestone views
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Krabi: Railay Beach Bioluminescent Plankton Ferry Cruise

9.Railay Beach Bioluminescent Plankton Ferry Cruise

★★★★★★★★★★3.7 · 60 reviews · 3 hours · from $41

Meet beside Burger King Ao Nang at 4:30pm for a 5pm boat to Railay. You get sunset views, free time among limestone cliffs, snacks, snorkeling gear, and a short night swim with bioluminescent plankton. The glow depends on tide, moonlight, and water conditions, so it is never guaranteed.

“el plancton no existía, vimos 3 luces pequeñas y nada parecido a las fotos y videos. una gran desilusión. el barco muy ruidoso y no se veía nada para afuera, parecía una cueva. y el guía hablaba muy mal, no le entendimos casi nada. mala experiencia.”

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Krabi: Railay Sunset and Bioluminescent Plankton Tour - Railay Beach between 17:15 and sunset
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Krabi: Railay Sunset and Bioluminescent Plankton Tour

10.Railay Sunset and Bioluminescent Plankton Tour

★★★★★★★★★★3.9 · 55 reviews · 3 hours - 210 minutes · from $31

You’ll leave Ao Nang by traditional longtail boat, spend free time swimming and watching sunset at Railay Beach, then look for bioluminescent plankton after dark. A guide speaking English or Thai accompanies you, with snacks, fruit, juice, water, insurance, and life jackets included.

“Everything was very rushed and we left about 30min late due to some late passengers. The boat look ok but the steps are not safe and the guy supposedly helping people in and out was not that bothered. I ended up slipping and hurting my foot and not even an apology or a "are you ok?". Railay is obviously nice but too crowded with boats and people and the planktom is hit and miss. There are many others beached in thailand and even in Krabi that will be better”

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Krabi: Hong Islands Sunset, Bioluminescent Plankton and BBQ - The ride to Ko Lao Lading
BBQ, Evening Experiences, Hong Islands Tours from Krabi, Krabi Bioluminescent Plankton Tours, Tour Reviews

Krabi: Hong Islands Sunset, Bioluminescent Plankton and BBQ

11.Hong Islands Sunset, Bioluminescent Plankton and BBQ

★★★★★★★★★★4.3 · 41 reviews · 5 - 7 hours · from $54

From Krabi or Ao Nang, cruise by speedboat or longtail boat to Lading, Hong, and Pak Bia islands. Swim, snorkel, eat a Thai-style BBQ by the beach, watch the sunset, and look for glowing plankton after dark. The plankton show depends on tide and moon conditions.

“The trip was nice, the places we visited were very nice, the guide was nice. Unfortunately they packed the longtail boat wirh too many people on unmarked seats and some people were lacking common sense and personal space, sat on our stuff, moved our stuff and sat on our space, pushed us on the bench, pushed us when in line for the boat to get best spot. That created a very stressful atmosphere and ruined everything. I got at some point sick of it and almost caused a scene. horrible when u want a nice day.”

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Hong Islands Sunset & Glow Plankton Night Trip from Krabi - Hong Island gives you a proper afternoon
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Hong Islands Sunset & Glow Plankton Night Trip from Krabi

12.Hong Islands Sunset & Glow Plankton Night Trip from Krabi

★★★★★★★★★★4.0 · 32 reviews · from $52

From Krabi Town or Ao Nang, you’ll cruise by longtail boat to Hong Island, its lagoon and viewpoint, then enjoy a beach buffet at sunset before a night swim with bioluminescent plankton. English-speaking guides, snorkeling gear, transfers, fruit, drinks, and insurance are included.

“The tour was excellent. The tourists are leaving the Hong island when we arrived. The sunset was spectacular. The staff and the food they cooked was very good. The only thing was the price on Viator, you can get the same trip half the price if you buy it from the local tourist agencies.”

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Krabi 7 Islands Snorkeling, Sunset Dinner & Plankton Night - Ya Wa Sam starts the snorkeling
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Krabi 7 Islands Snorkeling, Sunset Dinner & Plankton Night

13.Krabi 7 Islands Snorkeling, Sunset Dinner & Plankton Night

★★★★★★★★★★4.0 · 23 reviews · from $45

From a 1 p.m. pickup to a dark-water plankton swim, this Krabi cruise visits seven islands, including Chicken, Tup, Ma Tang Ming, and Poda. You’ll snorkel, walk a tidal sandbank, eat a beach barbecue, and return after sunset. Guide Nicky has earned praise for his humor and care.

“The agency is totally fraud. The same tickets are available at one third the price directly at counters. Also they didn't even send a proper a/c minivan but a small truck to pick us from hotel. The food was below par. Luckily, the beauty of Krabi saved the day. I demand a refund for the trip.”

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Krabi Private Snorkeling Cruise with Bioluminescent Night Snorkel - Koh Lao Pe and an hour for snorkeling
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Krabi Private Snorkeling Cruise with Bioluminescent Night Snorkel

14.Krabi Private Snorkeling Cruise with Bioluminescent Night Snorkel

★★★★★★★★★★5.0 · 23 reviews

Set out from Ao Nang or Railay at 1 p.m. with Michael and a multilingual crew on a private 100-year-old junk boat. Snorkel at three island stops, paddleboard, enjoy a Thai buffet and cocktails, then swim with glowing plankton near Phra Nang Cave Beach.

“Best Christmas Day ever! Loved every minute of it and the staff were amazing which made it even better. Food was delicious. Definitely recommend! :)”

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7 Islands sunset tour plus bioluminescent plankton + BBQ - Pickup from Ao Nang, Krabi Town, or Railay
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7 Islands sunset tour plus bioluminescent plankton + BBQ

15.7 Islands sunset tour plus bioluminescent plankton + BBQ

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

Spend six hours exploring Krabi’s four-island route and quieter nearby beaches by boat. You’ll snorkel at Chicken Island, walk Tup Island’s sandbar, eat a Halal BBQ at Ko Poda, and look for glowing plankton after dark. Hotel transfers, equipment, drinks, snacks, and an English-speaking guide are included.

“we enjoyed all of the tour. no improvement needed”

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New in Krabi Bioluminescent Plankton Tours

★ 5.0Twilight Bliss 7 Islands and Plankton Night from KrabiFrom $393 reviews
★ 4.5Krabi 7 Islands Sunset and Bioluminescence Tour Include BBQ DinnerFrom $644 reviews
★ 4.5Krabi 7 Islands Sunset Tour with Bioluminescent Plankton + BBQFrom $493 reviews
★ 4.5Phi Phi 4 Islands Sunset Tour with Bioluminescent PlanktonFrom $907 reviews
★ 4.5Krabi 7 Islands Snorkeling Sunset and Bioluminescence with dinnerFrom $554 reviews
★ 4.0Krabi 7 Islands Sunset Tour BBQ Beachside Dinner + Plankton SwimFrom $496 reviews
★ 4.17 Islands Sunset & Plankton Swim with BBQ DinnerFrom $375 reviews
★ 5.07 Island Sunset With BBQ & Plankton Speed Boat TourFrom $553 reviews

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After dark

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