A North Sydney woman has spotted two creatures feared for their painful stings washed up on Kennington Cove Beach near Louisbourg.
People have been warned to be on the lookout for Portuguese man-o-wars this summer after they were first discovered at beaches on the mainland.
Wendy Russell says she reported her discovery to the provincial Department of Natural Resources.
Portuguese man-o-wars are usually found in tropical and subtropical waters but have been known to be farther north from time to time.
The colourful creatures look like a jellyfish but experts warn their sting can be deadly for some.
They have a body that can be 12-inches long but their tentacles can be up to 165-feet-long.