The alkaline earth metals are six chemical elements in column (group) 2 of the Periodic table.They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).They have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.hey are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure.
Female killer whales reach sexual maturity when they grow to about 15-18 feet (4.6 m-5.4 m) long, depending on geographic region. The gestation period for killer whales varies from 15-18 months. Birth may take place in any month--there is no distinct calving season. Calves are nursed for at least 1 year, and may be weaned between 1-2 years old. The birth rate for killer whales is not well understood, but, in some populations, is estimated as every 5 years for an average period of 25 years. Killer whales are highly social animals that occur primarily in relatively stable social groups that often range in size from 2 to 15 animals.
SeaWorld San Diego welcomes its newest arrival, a baby killer whale weighing an estimated 350 pounds and measuring between 6 and 7 feet. By Telegraph Video, video source SeaWorld San Diego and Aquatica. 10:30AM GMT 03 Dec 2014. After a 17-month gestation SeaWorld San Diego has a new arrival. Kaliaâs the killer whale gave birth to a calf that is estimated to weigh between 300 and 350 pounds and measure between 6 and 7 feet. The baby whale was born in Shamu Stadiumâs main show pool following two hours and 15 minutes of labour.