That description strongly matches a:
🌊 Likely identification
Velella velella
🧠What it is
These are small ocean organisms that float on the surface of the sea. They:
- Have a blue, jelly-like body underneath
- A stiff, sail-like fin on top
- Drift in large groups driven by wind and currents
They often wash up in huge numbers after storms or strong winds.
🌊 Why you’re seeing thousands
- Strong winds push them toward shore
- Seasonal population blooms happen in open ocean
- Waves strand them on beaches in large “blue carpets”
It can look dramatic, but it’s a natural ocean event, not pollution.
⚠️ Are they dangerous?
- Harmless to touch for most people
- Not aggressive or toxic in a dangerous way
- Still best not to handle them a lot (some people get mild skin irritation)
🧩 Bottom line
What you saw is very likely:
a natural mass stranding of Velella velella, a harmless drifting ocean organism—not plastic or pollution.
If you want, I can explain why they have a “sail” and how they use wind to travel across oceans—it’s actually pretty fascinating.
