This needs more press
I know that this is a long way from a Blade Runner replicant but when I first saw a story about this I was surprised that it wasn't bigger news. This is a reasonably large creature about the side of a coin and is fully controllable via the blue light. Take that down to a smaller scale and program it to seek out plaque in arteries and you've got a bot that can prevent heart attacks. Program them to close off damage inside blood vessels and you could stint aneurisms without opening people up. Take them up to larger sizes and you could use them to collect oil or other contaminants in bodies of water. This is more than just a swimming toy, I think it's a stepping stone toward some very cool tools.