Stepped on a weever fish? Here’s what to do

A day at the beach can quickly turn painful if you accidentally step on a weever fish, one of the most common marine hazards found along Portugal’s coastline during the summer.

The Lisbon Municipal Civil Protection Service has reminded beachgoers how to respond if they are stung, warning that the fish often buries itself in the sand close to the shoreline, making it difficult to spot.

Although its sting is extremely painful, prompt treatment can help ease the symptoms.

What should you do?

If you are stung by a weever fish (known as peixe-aranha in Portuguese, which translates into spider fish), Civil Protection recommends:

Leave the water safely to avoid further injury.

Carefully remove any visible spines, using tweezers or while wearing gloves if possible.

Immerse the affected area in hot (not scalding) water for at least 30 minutes, or until the pain subsides. The heat helps break down the venom and is considered the most effective first aid treatment.

Alert the lifeguard if one is on duty.

Seek medical attention if the pain persists, significant swelling develops, signs of infection appear, or you experience an allergic reaction.

How to avoid being stung

Weever fish are commonly found partially buried in shallow sand near the water’s edge, particularly in warmer waters.

To reduce the risk of stepping on one, beachgoers are advised to wear aquatic footwear, particularly on beaches where weever fish are known to be present.

Michael Bruxo

Journalist for the Portugal Resident.