The long tentacles of a lion's mane jellyfish are lined with stinging cells ... it can be difficult to gauge the size of the Man O' War from a distance. This is a clever tactic on its part because ...

As beach season gets underway, reports are already emerging of jellyfish sightings and stings. Lion's Mane jellyfish were spotted in Dublin, Ireland; several beaches in Mexico's Sinaloa state were ...

The main species of jellyfish you're likely to encounter on Welsh beaches are: the lion's mane, compass ... These are similar in size to the compass jellyfish and also bell shaped but have ...