Underwater robots & drones are getting more advanced all the time. Chasing Dory is the latest one capable of capturing amazing footage in almost any body of water. It has a portable design and lets you use your smartphone as its controller. Dory has a hydrodynamic design and advanced tech such as sensors, gyroscopes, and accelerometers.
With Depth Lock, the drone can stay stable at the depth of your choice. A 45-degree tilt lock is available to let you scan the ocean floor easily. Two 250-lumen lights are included to illuminate the waters. Dory also comes with a WiFi buoy with 8 GB of storage space.
Dory is rated to max depth of 49ft with a 15m tether. It has max speed of 2.5ft/sec.[HT: Kickstarter]