A mysterious object, similar in size and shape to the Loch Ness monster, has been spotted floating past The O2 at Greenwich.

The video was taken by a passenger on the Emirates Air Line cable car.

The grainy image shows several dark lumps floating through the Thames in Greenwich.

This was on the cable car in Greenwich yesterday. something huge was moving under the water and then briefly surfaced. Are there whales in the Thames?? Or is it some weird submarine. Penn Plate

Watch the video in full below

Video from YouTube/Penn Plate