The armoured cruiser Carl Friedrich was constructed in the year 1902 at the well-known shipyard of Blohm & Voss in Hamburg, Germany. The armoured cruiser had a length of 126m and was equipped with an impressive array of guns and torpedo launchers. She was the second ship of the Prinz Adalbert class when she was commissioned by the Imperial German Navy on 12 December 1903.
“You’re crazy; I don’t get in the water with bitey things!” The announcement of my impending great white shark trip drew a variety of such responses from horrified friends. The undisputed bad boys of the shark world, great whites are the largest of all predatory sharks, reaching lengths of up to 6m and weighing in at over 2,000kg.
This extraordinary behaviour has been observed and filmed for the first time by ecologist Lindsey Swierk of Binghamton University, New York. “They are probably extracting lower concentrations of oxygen every time they’re respiring the air bubble, but it might just be enough to keep them underwater for long enough that they can escape a threat,” she said. Even though the bubble is relatively large, it remains attached to the lizard’s head rather than floating off to the surface.
