The way hundreds of fish move together may help with the design of wind turbines. Scientists have been studying them to try to make wind farms more efficient. #30Animals

The way hundreds of fish move together may help with the design of wind turbines. Schools of fish appear to move as one - turning, contracting, expanding, even parting and then coming back together again. This is a beautiful sight. Scientists have been studying them to try to make wind farms more efficient.

www.bbcworldservice.com/30animals

With Patrick Aryee.

#30Animals