Gazelle : The Palestinian Biological Bulletin (ISSN 0178 – 6288) . Number 141, September 2016, pp. 1-19. | Page 5

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The animals are insulated from the cold water by a fat layer of blubber, by which
they maintain their body temperature at around 38º C. The female gives birth to
one live young that is born tail first. The newborn whale or dolphin must
immediately rise to the surface for its first breath of air (Jongbloed, 2004).
Toothed whales and dolphins have a remarkable sonar system, which allows
some dolphins, for example, to di