Photos: The robot fish that swim like the real thing

Researchers at the Massachusetts Institute of Technology have unveiled their next generation of robotic fish, designed to mimic the movements of a tuna.

The fish's creators - mechanical engineers Kamal Youcef-Toumi and Pablo Valdivia Y Alvarado - are hoping the manoeuvrable underwater robots will be used to monitor submerged structures including oil and gas pipelines, as well as keep track of pollution levels in bodies of water.

Photo credit: MIT