Several venomous Portuguese Man-of-War have been washed up by on-shore winds on beaches across the Cornish coast.
The animal, which is often mistaken for a jellyfish, can inflict an excruciating sting, even once dead and on shore.
Friends of Portheras tweeted the pictures, along with the advice to beach-goers to stay away and only spectate from a distance.
They were spotted at Portheras and Sennen.
Further potential sightings have been made at Long Rock and Marazion Beach. A series of images show potential Man-of-War washed up on the sand.
The siphonophore, an animal made up of a colony of organisms working together, is not alien to our region's beaches.
They are often washed up during stormy weather and when there are high winds.