A swarm of thimble jellyfish was spotted along the coastline of Lapu-Lapu City during the first week of June, prompting local authorities to issue warnings and conduct cleanup operations in affected areas.
The jellyfish were first discovered in Barangay Marigondon on June 2, 2026.
The City Environment and Natural Resources Office (CENRO) immediately responded after receiving reports from residents about the presence of the marine creatures along the shore.
Following an inspection, the agency confirmed that the jellyfish found in the area were thimble jellyfish.
Authorities warned that contact with the species may cause intense stinging sensations, itching, skin redness and painful rashes. Residents and visitors were advised to exercise caution when visiting coastal areas where the jellyfish have been reported.
According to local authorities, thimble jellyfish populations typically increase during periods of warmer sea temperatures. Ocean currents can also carry the jellyfish closer to shore, increasing the likelihood of encounters with swimmers and beachgoers.
On June 3, CENRO personnel conducted a cleanup operation in the affected area. Workers manually removed the jellyfish that had accumulated along portions of the coastline.
Officials also reported that the same type of jellyfish had reached Sta. Rosa in Olango Island, raising concerns that additional coastal areas could be affected.
As a precaution, authorities continue to advise the public to avoid swimming in locations where thimble jellyfish have been observed.
Local officials said monitoring efforts remain ongoing as they assess the extent of the jellyfish presence in coastal waters. Residents are encouraged to report sightings to authorities and follow safety advisories issued by local government agencies.
The warning remains in effect while authorities continue surveillance and response measures in affected areas.
