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.
The Fastest Shark in the Ocean. The shortfin mako shark is the fastest shark in the ocean. This toothy torpedo can swim at speeds of up to 60 mph has a tail like a tuna fish, its favorite prey.01:58.he Fastest Shark in the Ocean. The shortfin mako shark is the fastest shark in the ocean. This toothy torpedo can swim at speeds of up to 60 mph has a tail like a tuna fish, its favorite prey.