DSC09172

DSC09172

Observation - DSC09172 - UK and Ireland. Description: About 30cm long. Several seen (i think the same species) swimming at the surface with dorsal fins out of the water, circling and making a commotion. What are they doing?

About 30cm long. Several seen (i think the same species) swimming at the surface with dorsal fins out of the water, circling and making a commotion. What are they doing?