Found thousands of these translucent blue, plastic-looking ovals washed up on the beach today. They have a stiff fin on top and blue jelly underneath. Are they dangerous?

who might try to pick them up or ingest them. For pets, particularly dogs, ingestion of large quantities might lead to gastrointestinal upset.

For those with sensitive skin or known allergies, contact may cause mild irritation or a rash. In such cases, washing the affected area with soap and water usually alleviates any discomfort.

If you do experience a sting from a Velella velella, it is likely to be very mild. Most people report only a slight tingling sensation or irritation. Washing the area with seawater, followed by fresh water, and applying a soothing lotion or cream can help.

If any unusual symptoms occur, such as persistent pain, swelling, or an allergic reaction, it’s advisable to seek medical attention. Such reactions are rare, but it’s always better to err on the side of caution.