Whats the green glowing particles when I swim in water?

[Lingam]

I was panning some bony dirt and then after a bit I was walking around in the water, I see these glowing green particles trailing me in the water. I don't have a temporal gear in my inventory that might cause this..

I'm on 1.21.RC2

Thanks

 

Edited September 6, 2025 by Lingam

[LadyWYT]

The little greenish blue particles are phytoplankton; you'll find them in areas that are sufficiently warm.

[Lingam]

Also during the night in the rain, I am seeing an area where there are green sparkles coming from the ground in one spot only.. unfortunately it's high rift activity and I dont have armor yet and there are scary monsters out there... see this tiny screenshot due to 40kb limit

Note: It is not lightning bugs as they move around also it is raining

 

[Lingam]

32 minutes ago, LadyWYT said:

The little greenish blue particles are phytoplankton; you'll find them in areas that are sufficiently warm.

Thank you

[Echo Weaver]

There's phytoplankton in this game. Dang. And I thought it was cool to have butterflies.

[Lingam]

22 hours ago, Lingam said:

Also during the night in the rain, I am seeing an area where there are green sparkles coming from the ground in one spot only.. unfortunately it's high rift activity and I dont have armor yet and there are scary monsters out there... see this tiny screenshot due to 40kb limit

Note: It is not lightning bugs as they move around also it is raining

 

OOps - I figured it out.. I had placed two books on the ground and for some reason they were emitting glowing dust at night... weird.. I already read..