Meet the Emily Robotic Lifeguard: a fast-swimming robot that up to 8 people can grab onto in the water. It is 4 feet long, weighing 25 lbs. It is powered by an electric motor, working like a mini-jet ski. The latest version has two-way radios and a video camera with live feed to smartphones.
Emily’s production was funded by the U.S. Navy. The robot is made of Kevlar and aircraft-grade composites. Military.com has more on the story.