The Compass jellyfish is the most common found in Irish watersThe good weather has resulted in increased jellyfish activity along Dublin’s coastline, beach visitors have been warned. Photos of Compass jellyfish were posted on social media over the weekend, with reports of several day-trippers being treated for stings. Named after their distinctive markings, they are commonly found in Irish waters between July and September. Measuring about 30cm to 50cm, Compass jellyfish have reddish brown V-shaped markings, 24 long tentacles and four frilly mouth arms. While the painful sting is not considered to be as nasty as one from a Lion’s Mane, contact is still best avoided.

Source: Irish Independent July 20, 2021 14:37 UTC