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Warming Seas Drive 150 Daily Jellyfish Stings in Delaware

8/23/2026

Summary

Story summary

Delaware lifeguards record 150-200 jellyfish stings daily on state beaches.
Captain Nico Caceres says stings now cause lasting pain and vomiting in children.
State officials warn swimmers about lion’s mane, Atlantic sea nettle, moon jellyfish, and sea walnut.
Officials advise rinsing stings with vinegar then applying hot water or a warm towel.
Marine advisory director Chris Petrone links the surge to warming water, higher salinity, winds and a quiet hurricane season.

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Story summary

Delaware lifeguards record 150-200 jellyfish stings daily on state beaches.
Captain Nico Caceres says stings now cause lasting pain and vomiting in children.
State officials warn swimmers about lion’s mane, Atlantic sea nettle, moon jellyfish, and sea walnut.
Officials advise rinsing stings with vinegar then applying hot water or a warm towel.
Marine advisory director Chris Petrone links the surge to warming water, higher salinity, winds and a quiet hurricane season.