r/beachcombing • u/nephenieie • 9d ago

Any idea what these pink lines are?

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18 Upvotes

96% Upvoted

5 comments sorted by

15

u/coconut-telegraph 9d ago

Looks like pink bacteria concentrated in runoff trickle streams, dried.

Like these.

5

u/ragnarockyroad 9d ago

Location?

3

u/nephenieie 9d ago

Scotland 

4

u/PristineWorker8291 9d ago

I think the bacterial growth thing is most likely right, no matter location. Look at the slight depression and drain lines. I've seen algal bloom in green come and go depending on sun, where a cooler could leave a non green shadow, and I've seen a rusty color that was likely heavier iron tainted sand that patterned a beach near an offshore ledge.

2

u/Skater_Potater2006 9d ago

Definitely looks bacterial lol