Bathers are advised not to enter the water due to the presence of these jellyfish whose sting can be dangerous and cause serious symptoms including nausea, vomiting and respiratory distress.
The situation is being monitored.
We have raised the red warning flag in Sandycove and erected signs warning swimmers of the presence of jelly fish in the water and washed up on the beach. The species have been identified as Lions Manes.
The situation is being monitored.
