Dolphins Facts and Information Article Example | Topics and Well Written Essays - 1000 words

Dolphins Facts and Information - Article ExampleThey are also believed to have erst lived on subvert some ten million years ago. According to scientists, dolphins skeleton shows that its front flippers are a circumscribed form of hands and the two unattached b peerlesss behind its ribcage are pelvic girdles, to which hind limbs once attached (MacGillivray, 2000).Interestingly, dolphins are known for its complex communication which consists of their call ranges, cognitive skills, and ability to modify signals done vocal learning. A study by Janik (2000) revealed how bottlenose dolphin uses whistles that could reach over 580 meters to interact one another. Aside from this, dolphins are known to communicate finished sonar which interests auditory researchers, acoustical physics, and even force scientists. In his book The Sonar of Dolphins, Au (1993) documented the abilities to echolocate which means it can explore the depths of the ocean through echo and with little use of sight.W ith almost forty species, dolphins are known to reach sexual maturity date for about six to ten years and copulate from belly to belly through a pregnancy period which takes up to 11-17 months. After this period, mother dolphins nurse her baby for about a year as female dolphins give birth to one calf every two years. Moreover, when it comes to its sleeping behavior, it is known that dolphins buy the farm in full deep sleep and so, they only sleep one half of their brain at a time for about 8 hours a day (Ridgway, 1990). With this, their lifespan could reach a utmost of 40 up to 50 years.Dolphins have long been a fascination for human civilization since the antediluvian patriarch Greek period. These marine mammals are said to have always been friendly to the boaters and bathers at the ancient metropolis of Greece.