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What causes these pale blue patches? Aeration?

I’m on a cruise right now and noticed these patches of pale blue. Some of them are directly off the ship, but others are further out. What causes this? Is it aeration/bubbles being formed from the churning water around the ship, or something else?

Thanks!

Commentaires

Life-Celebration-7472025-12-30 14:13

Air bubbles

oddbitch2025-12-30 14:14

That’s what I figured. Thanks! :)

TheProfessorO2025-12-30 16:49

and turbulence

State62025-12-31 00:17

The propeller also stimulates dinoflagellates in the water which will lead to a brighter wake behind the ship at night.

MeSkeptikal2025-12-31 05:19

Those big cruise ships have propellers at the aft of the ship, and they will churn up the water and mix bubbles with it.

These big ships also sometimes have thrusters pointed to port and starboard that push the ship sideways. This can help with maneuvering close to a dock while in port, and can also help the ship turn tighter than it could with just its normal rudders at the back of the ship.
They can cloud up the water a lot as well.