Police are appealing for witnesses after a lifebelt and its holder were set on fire at the end of the Albert Edward Pier at Carrick Harbour.
The arson attack occurred on Saturday night at 10.00 pm.
Police are seeking information in relation to this incident and have urged members of the public to report any suspicious activity.
Mid and East Antrim Policing and Community Safety Partnership chairman Cllr Andrew Wilson commented: “Given the recent drama at Ballycastle where three children were rescued from the sea, it shows us the very real dangers present on our coasts. It is hard to understand why anyone would want to destroy lifebelts. They are there to save lives.”
A PSNI spokeperson said: “These items are designed to save lives. People who cause damage to them clearly have no regard for human life. If you have any information regarding this incident, please contact police on 101 and quote reference 446 21/08/2017.”