Putin dives to bottom of world's deepest lake:
Judo-mad Putin, 56, prides himself on keeping a peak physical condition and has raised eyebrows with a series of adventures over the last years.
Just the day earlier, he clipped a radio transmitter onto a beluga whale named Dasha in Russia's Far East.
Famous official pictures taken during his 2000-2008 presidency showed him fishing with a muscular naked torso that would impress any fitness fanatic while last year he fired a tranquilising dart at a tiger in the Far East.