Cat Ba Night is not only beautiful for the murmuring waves or the salty breeze but also hides a magical phenomenon- bioluminescence (bioluminescence). As night falls, small waves suddenly glow with a magical blue color, making the sea surface shimmer as if sprinkled with glitter. If you love unique experiences, then bioluminescence hunting season is what you shouldn't miss at Sun World Cat Ba.

1. Natural light in the night sea

This phenomenon occurs when plankton in the seawater emit bioluminescence - a natural chemical reaction that creates a glowing blue color beautiful. That light only appears in the dark, when there is water movement, like your footsteps or a gently paddling oar.

Why is Cat Ba an ideal spot for bioluminescence hunting?

The sea area around Cat Ba still retains its wildness, with little artificial light and many calm, clear water areas - perfect conditions to see bioluminescence most clearly.

2. Tips for a perfect bioluminescence 'hunt'

The most ideal time is from May to August , on moonless or dimly lit nights, when the sky is dark enough for the bioluminescence to appear clearly.

Choose the right location

Prioritize deserted beaches or areas near Sun World Cat Ba but away from city lights - where the water surface is still clear and calm.

Move correctly

You can paddle a SUP, walk along the sandy shore, or wade gently in the water. Just a flick of your hand, and streaks of blue light will spread around you like magic.

Recommended equipment to bring

• Phones with Night Mode or cameras with high ISO.

• Turn off the flash so as not to obscure the natural light.

• Wear dark clothing and minimize loud noises - the light will be more brilliant when undisturbed.

3. A wish amidst the glowing sea

Locals still pass down the saying:

“If you touch the bioluminescence and whisper a wish, good things will come to you for the whole next year.”

Even if it's just a tale, standing amidst the night sea of Cat Ba, where even gentle waves glow, you'll understand why bioluminescence makes everyone believe in a touch of nature's magic.