Stanford University's scuba diving robot
Media playback is unsupported on your device
Video

Scuba diving robot explores shipwreck and other tech news

BBC Click's Nick Kwek looks at some of the best of the week's technology news, including Stanford University's OceanOne robot exploring a shipwreck in the Mediterranean Sea.

Apple, Twitter and Facebook announce financial results and China unveils a security robot armed with a weapon capable of delivering electric shocks.

More at BBC.com/Click and @BBCClick.

Go to next video: US Air Force breaks maglev speed record