WebNov 1, 2016 · Cetacean flippers evolved from the tetrapod forelimb in whale ancestors as an adaptation for aquatic locomotion ( Fish, 2002, 2004 ). Similar to engineered wings, flippers have a fusiform cross-section and a swept-back planform, and this morphological design enables enhanced lift generation relative to drag ( Weber et al., 2009 ). WebView full document. See Page 1. 39) 40) What does the observation that a whale's front flippers have the same bone structure as all mammalian forelimbs suggest? A) Land mammals originally came from the sea. 40) B) There must have been land and aquatic ancestors that coevolved. C) Whales show remarkable diversity.
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WebDec 20, 2007 · Paleontologists have discovered a number of putative transitional intermediates that led to the emergence of ancient whales. These fossils date to around 45 to 50 million years in age. According to the evolutionary paradigm, as these intermediate forms transitioned from life on the land to life in the oceans, the fore limbs evolved into … WebFeb 15, 2024 · A large male killer whale may have pectoral flippers as large as 2 m (6.5 ft.) long and 1.2 m (4 ft.) wide. A female’s pectoral flippers are significantly smaller. A killer whale’s pectoral flipper contains 5 digits much like the fingers on a human hand. Flukes Flukes Each lobe of the two-lobed tail is called a fluke. cities near orlando
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WebThe pectoral flippers of male killer whales are proportionately larger than those of females. A large male killer whale may have pectoral flippers as large as 2 m (6.5 ft.) long and … WebHumpback whale. The humpback whale is a noisy mammal, and the male actually “sings.”. It is not known why the whale sings, but it may be to attract a female and warn off a rival male. Its song may also help it find other whales. Humpback whales have the longest flippers of any whale. They move their flippers up and down slightly as they ... WebAug 31, 2024 · The flippers of a whale or dolphin are used for navigation and steering when the animal is swimming in the water. These marine mammals are able to perform a variety of aquatic acrobatics with the help of their flippers. For example, they can steer to the left or right by adjusting the angle of their flippers. What is a flipper in anatomy? diary of a spy 2022 cast