TechnologyRobotic fish powered by electronic blood can swim for 36 hours A robotic fish uses electronic blood to power itself. The design is very energy efficient and the creators say it can swim non-stop for 36 hours ¿ìè¶ÌÊÓÆµ
TechnologyUS Navy tests underwater robots that recharge by eating fish faeces The US Navy has built a device for charging underwater robots that gets its energy by digesting fish faeces and other organic matter on the sea floor ¿ìè¶ÌÊÓÆµ