[Lukas.S (OP)]

Is in the sea any algae which can your skin get burn like jellyfish sometimes do?
Thank you. Lukas opening new bottle.

[WylieE]

There is one that is known, a dark brown algae called Lyngbya majuscula.
Here is some more information on the rash it causes:
http://dermnetnz.org/dermatitis/plants/seaweed.html

[Lukas.S (OP)]

Thanks for tip.