Goose Barnacles?

Goose Barnacles?

Observation - Goose Barnacles? - UK and Ireland. Description: Not sure what these were at all. Strolling along shore I tapped them with my foot only to be surprised by them retracting/flecking, they were alive! Can anyone confirm if they are indeed goose barnacles?

Not sure what these were at all. Strolling along shore I tapped them with my foot only to be surprised by them retracting/flecking, they were alive!
Can anyone confirm if they are indeed goose barnacles?