Water activity

From San Juan: La Parguera Glowing Bio Bay Boat Tour

Water activity

From San Juan: La Parguera Glowing Bio Bay Boat Tour

From US$ 199 per person

Experience an unforgettable evening on this exclusive boat tour to La Parguera Bio Bay. Get magnificent views while cruising the bay, swim after dark, and see the dinoflagellates that light up.

About this activity

Free cancellation
Cancel up to 24 hours in advance for a full refund
Reserve now & pay later
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Covid-19 precautions
Special health and safety measures are in place. Check your activity voucher once you book for full details.
Duration 9 hours
Check availability to see starting times.
Live tour guide
English, Spanish
Pickup included
You will be picked up from your accommodation in San Juan, Old San Juan, Condado, Isla Verde, Miramar, Ocean Park, or Calle Loiza. Please be ready 10 minutes before the scheduled pickup time.
Small group
Limited to 13 participants


  • Be amazed by the mystical effect created by microscopic creatures
  • Learn about this natural phenomenon
  • Visit a local attraction on the Southwest part of Puerto Rico
  • Admire views of the bay from the boat
  • Swim in a secluded part of the bay
Full description

Join your small group of fellow adventurers and embark on a boat tour traveling to La Parguera, a small fishing village in southwestern Puerto Rico. Discover one of the best-preserved coral reef systems and mangrove forests in the Caribbean.

Upon arrival at La Parguera, stop for a quick appetizer at one of the various restaurants and bars. Board a private boat for a 25-minute ride through floating homes and mangrove cays while the sunsets.

Once you reach the bay your Guide will explain all you need to know about the dinoflagellates phenomenon. Swim and experience firsthand the agitation of the water disturbing these microscopic creatures that give off a glowing light, creating an impressive and magical effect.

Spend about 30 minutes marveling at this strange, lovely light show before heading back to the pier.

  • Hotel Pickup and drop-off
  • Guide
  • Appetizers at La Parguera
  • Bottles of water and local beer at the boat
  • Additional food and drinks
  • Tips
Not suitable for
  • Children under 3 years
  • People with mobility impairments
  • Wheelchair users

Select participants and date



Important information

What to bring

  • Swimwear
  • Change of clothes
  • Towel
  • Sunscreen

Not allowed

  • Alcohol and drugs

Know before you go

  • Complimentary car seats or booster seats are available
  • You are more than welcome to bring your own snorkeling equipment
  • Service animals are allowed
  • The total activity time includes a drive of 2 hours and 15 minutes each way
Customer reviews

Overall rating

4.7 /5

based on 6 reviews

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Awesome. Julian is an excellent tour guide, but moreso makes you feel like you're heading somewhere new and exciting with a friend - chill, genuine, informative, and makes the effort to make sure you're cared for (eg, "server" for the evening, driving us back to our homes in the rain). Also great suggestions for your stay. On the boat with the captain (also a fun guy!), we enjoyed the water before heading out to the bay. Warm and was shallow enough to walk right near the boat! The bioluminescence is amazing. Swimming in the water feels more immersive than I'd feel just doing kayaking. From the "sparkle, glowing" effect moving around your hands, to kicking your feet to see them glow (at least that's what I did), it was such a cool experience to be a part of! Tips: Bring a sandwich for the late ride back and/or before you leave (tacos later are great). Going out during the new moon was the right idea to be as dark as possible. td;lr: Glad to be a part of la familia ;)

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March 23, 2023

Ramon did everything for us! He was our driver, server, (best fish tacos ever) and our tour guide. He was very timely and very friendly and professional, 10 of 10 Hector was our boat captain and was exceptional! Also, the bioluminescent bay was pure magic. Highly recommend booking with these two, you’ll be sure to have an amazing experience

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January 10, 2023

Amazing experience!

January 6, 2023

Product ID: 406943