Friday, January 11, 2013

Blue Whales - The Largest Creature On Earth

By Terry Hunefeld


Blue Whales are fantastic creatures and one of the best places to see them is from Southern California. Whale watching trips go out regularly from San Diego, Los Angeles, Oxnard, Ventura and Santa Barbara.

Blue Whales are the biggest animals that have ever lived on the face of the earth " far bigger than the largest dinosaurs. They have been weighed up to 180 tons which is 20,000 pounds heavier than a DC-10. The largest elephants only weigh a bit over five tons. Blue Whales have been measured by scientists up to 100 feet long, although today the largest average around 75 - 80 feet. They have been measured at more than 110 feet - compare that to the longest dinosaur skeleton of less than 90 feet from tail to nose.

A common myth is that the heartbeat of these magnificent creatures can be heard twenty miles away. Not only is that not true, but their heart cannot be heard from even ten feet away!

A fun fact is that the tiniest seabird in the world, a Cassins Auklet has the same diet as the the largest animal in the world. Both eat the same food: a tiny shrimp-like crustacean called krill. Blue Whales have a series of rods and plates called baleen (in place of teeth). Instead of chewing their food they strain krill from the water and swallow them whole - more than three tons every day.

Blue Whales have been known to breed with Fin Whales, the second largest animals on earth. Several hybrid whales have been documented by scientists using DNA analysis.

Blue Whales are thought to be solitary or perhaps associate with one other individual. It is not known whether Blue Whale pairs stay together over long periods of time. Where there are high concentrations of food as many as 50 Blue Whales have seen in one area, although this is exceptional because they do not normally form the large close-knit groups seen in other baleen whale species.

Blue Whales are fast, strong swimmers with an average speed of about 12 miles per hour with an ability when alarmed to move at speeds of up to 30 miles per hour.

Blue Whales are known to inhabit oceans all over the world. They are especially attracted to Pacific Ocean waters off California and Mexico which can host up to 30% of the worlds entire population during the warmer spring and summer months due to the excellent supply of food.

Blue Whales are found throughout the world but scientists do not know exactly where they breed or give birth. Feeding has been documented in both tropical and cold polar waters.

In the 1800's there were hundreds of thousands of Blue Whales all over the world. Then man developed weapons such as guns and exploding harpoons an proceeded to nearly eliminate these wonderful animals in the early twentieth century. Blue Whales were hunted mercilessly for 40 years until they were nearly extinct. Protection began in 1966 and their population is slowly recovering with perhaps 6,000 to 8,000 Blue Whales left worldwide today.




About the Author:



No comments:

Post a Comment