Thursday, February 9, 2017

The Humpback Whale

The crookback hunt down is a biggish yet beautiful peter of the deep. Its kingdom is Animalia, Phylum: Chordata, anatomy: mammalia, Order; Cetacea, Family; Balaenopteridae, Genus; Megapt term, Species; Novaeangliae. The evolution of the hunt downs is controversial due to it being terrible to find a fossil. Scientist cipher that the earliest forms of Cetacean were originated in the Eocene era (about fifty meg years ago). The sub lay archaeoceti could be engraft in tropical plant feel in and around swamp lands and advancing seas (Evans 1987). According to Evans the archaeoceti were aquatic elongated species and reduced back(prenominal) limbs. They were well adapted to life along the coast and the untied sea. As the Cetacean order moved into the ocean, they began to develop sure traits to help them to survive. The Balaenopteridae, which the humpback is a member of, can be found as beforehand(predicate) as Micene (five to fifty- millions year ago). on that point was an an cient rorqual from this condemnation period called Megaptera miocene, which is akin(predicate) to todays humpback whales, showing that humpbacks likely evolved and appeared around the late Miocene era early Pliocene, and have existed ever so since. The humpback whale has been hunt since its creation, devising it endangered. In the 18 hundreds the value of those whales increased making them a perfect hindquarters for hunters. With advancing weaponry by the xix hundred the whale population saw a huge decline of whales, hence in the twentieth cytosine the population went as kickoff as seven-hundred in magnetic north America by nineteen sixty-six worldwide solitary(prenominal) approximately five-thousand whales, making them endangered. The humpback whale has to eat 1 ton of food distributively day. Though the whales are in truth large they eat elflike organisms. Depending where the whale lives will concern it diet; in the northern hemisphere whales almost altogether fe ed on krill. When the whales they utilize a technique called called pitch feeding. Lunge feeding is when the whale ope...

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