Cortisol is produced and secreted by the adrenal glands. Production of the hormone is regulated by the hypothalamus in the brain and by the pituitary gland, a tiny organ located below the brain.
Cruise lines that operate private islands: Celebrity Cruises, Costa Cruises, Disney Cruise Line, Holland America Line, Princess Cruises and Royal Caribbean International. Disney Cruise Line calls at its private island, Castaway Cay, on itineraries from Port Canaveral.
Apart from the big four, there are a number of smaller cruise lines. For example, FredOlsen Cruises Ltd., operates four ships with a capacity of 3,800 passengers. It is owned by the Norwegian-based Fred Olsen Group.