A wildlife trust has encouraged beachgoers to be cautious after a swarm of jellyfish was spotted along the Gorleston coast and in rivers.
Compass jellyfish - distinctive by their translucent bodies with brown compass-like markings - have been seen in the shallows of the North Sea, River Yare and River Bure.
The jellyfish, which are also known as Chrysaora hysoscella, have a bell which can measure up to 30cm across and carry a non-fatal sting.
However, caution is still advised if beachgoers spot them in or out of the water.
A spokesperson for Norfolk Wildlife Trust said: "Compass jellyfish give a nasty sting, so if you spot them during a visit to the beach – look, but don’t touch.
"Once they have stung something, jellyfish often leave the tentacle behind and can continue to sting using it even when not connected to their body."
The jellyfish feed on small fish, crabs and even other jellyfish and are a common sight on British shores from May until October.
For more information, visit the Norfolk Wildlife Trust website.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here