Leng

Leng is an autonomous underwater exploration vehicle/robot able to move easily through any type of water current and even under ice because it has a propulsion system that imitates almost the perfection used by submarines. This vehicle can also be submerged up to 150m deep without the danger of collapsing because its frame is extremely resistant, and because it has a guided positioning system that will make it able to avoid any possible obstacle in its path.

One of the things I liked most about Leng is that in addition to being able to dive for more than 150m, it can do so for an extremely long period of time and is that it has a solid battery that gives it enough energy to last up to 10 hours underwater.