2025 Guide to Bioluminescent Comb Jellies
Florida’s rarest glow is happening now — comb jellies and dinoflagellates together!
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Table of Contents
1. What Are Comb Jellies and Why Do They Glow?
Comb jellies, also known as ctenophores, aren’t jellyfish at all — they belong to their own group of marine animals. They shimmer and glow thanks to tiny hair-like cilia that scatter light in rainbow patterns by day and emit blue-green light at night when disturbed.
Unlike stinging jellyfish, comb jellies are completely harmless — you can even hold one gently in your hand and watch it glow!
2. When Is the Best Time to See Comb Jellies in Florida in 2025?
Traditionally, comb jellies appear in Florida from October through May, with peak brightness in winter.
But in 2025, the season is starting early! Right now, we’re seeing a rare overlap — glowing comb jellies drifting in the water at the same time as summer dinoflagellates. This “double glow” makes late summer nights on Florida’s Space Coast absolutely unforgettable.
3. Where Can You See Comb Jellies Glowing in Florida?
The Indian River Lagoon on Florida’s Space Coast is one of the brightest places on Earth for bioluminescence. Here’s where BK Adventure takes you to see comb jellies:
- Haulover Canal — Great for dolphins, manatees, sunsets, and the glowing lagoon after dark.
- Beacon 42 Boat Ramp — Florida’s darkest skies, perfect for seeing bioluminescence and the Milky Way.
- Kiwanis Island Park (Cocoa Beach) — Easy to access, close to Orlando and Cape Canaveral.
- Kelly Park East (Merritt Island) — Summer-only Bio Fun Tour with tandem kayaks. Guests paddle to an island beach where bioluminescence is spectacular. At the end, there’s a bioluminescent beach where guests sometimes swim — but swimming is optional, at your own risk, and not part of the official tour.
4. Are Comb Jellies Safe to Touch?
Yes — completely! Comb jellies have no stingers, so they’re safe to gently scoop up in your hand.
It’s one of the reasons they’re a favorite with kids and families.
5. Why Is the 2025 Overlap with Dinoflagellates So Special?
This year, Florida is experiencing something truly rare: both types of bioluminescence at the same time.
- Dinoflagellates glow blue with every paddle stroke.
- Comb jellies sparkle in your hands like floating stars.
Together, they create a layered, magical glow that feels like paddling through another world.
6. Which BK Adventure Tours Let You Experience Comb Jellies?
At BK Adventure, you can experience comb jellies on multiple tours:
👉 Book your bioluminescence adventure here
7. Fun Facts About Comb Jellies
- They’re older than dinosaurs — over 500 million years old.
- They’re up to 95% water, yet they’re mesmerizing.
- They move with eight shimmering rows of cilia, making rainbow trails in daylight.
- They’re one of the few animals in the world that can produce bioluminescence naturally.
8. Tips for the Brightest Bioluminescence Experience
- Go on dark sky nights for better visibility.
- Book sooner rather than later — new moon weeks sell out fast.
- Pick the right tour: clear kayaks for immersion, rafts for families, and Kelly Park East for easy summer access.
- Bring long sleeves, bug spray, and a flashlight for comfort and safety.
9. FAQ: Quick Answers to Popular Comb Jelly Questions
Do comb jellies sting?
No — they’re harmless and safe to touch.
When is comb jelly season?
Typically October–May, but in 2025 they arrived early and are overlapping summer dinoflagellates.
Where to see them near Orlando?
Haulover Canal, Beacon 42, Kiwanis Island Park, Kelly Park East.
Best tour for families?
The Bioluminescence Rafting Tour (kids 3+).
Wrap-Up
2025 has been one of the brightest years yet — with both comb jellies and dinoflagellates glowing at the same time. Every paddle stroke sparkles, and every scoop of water reveals glowing life in your hands.
This rare overlap won’t last forever — catch the magic while it’s here!
👉 Book your Florida bioluminescence adventure today
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