Thames River Monster Sighting-What Was The Creature In The River?

On March 26, 2016 A Amateur Photographer Carrying A Mobile Phone, Was Riding On A Cable Car Next To The "Thames River"In Greenwich, London Captured A Large, Dark 70'-100' Foot Long "Plesiosaur" Type Creature Swimming In The River. The Monster Then Submerged Leaving A Large, "Wake" Behind It.