Angiotensin II is a potent vaso-active peptide that causes blood vessels to constrict, resulting in increased blood pressure. Angiotensin II also stimulates the secretion of the hormone aldosterone from the adrenal cortex. Aldosterone causes the tubules of the kidneys to increase the reabsorption of sodium and water into the blood.
The most reliable record of a Blue Shark at speed is 24.5 miles (39.4 kilometres) per hour for a 6.5-foot- (2-metre-) long individual. The Shortfin Mako (Isurus oxyrinchus) is probably the champion speedster among sharks.
How fast do Great White Sharks have to swim to jump out of water?   Great White Sharks can swim up to twenty miles per hour and need to attain this speed to launch their massive bodies out of the water. This type of jumping is typically â¦done as a surprise attack on an unsuspecting seal.