Fun Animal Encyclopedia: Fun Science Popularization Series

Author: Dong Renwei, Xu Yujiang
Publisher:
Publish Date: 2006-01-01
Features: When spring arrives and flowers bloom, flocks of wild ducks and swallows migrate from the south to the north. During migration, wild ducks can fly at speeds of 80–90 kilometers per hour, swallows at about 100 kilometers, and swifts at around 160 kilometers. They often take short breaks during their long journey, but when crossing deserts and oceans, they fly continuously without stopping for a moment. How astonishing their speed! How incredible their endurance! Deep in the blue ocean, a red drumfish is covered in sea lice, itching terribly. It finds the "fish doctor" in the sea and, head down and tail up, requests the "fish doctor" to treat it. The "fish doctor" accepts the red drumfish's request and not only pecks off each sea lice with its sharp beak but also dives into the red drumfish's mouth to treat it internally. A scientist for six consecutive hours to observe a "fish doctor" and discovered that during this time, the "fish doctor" treated hundreds of large fish. How dedicated! How efficient! A tiny male anglerfish wanders in the deep sea and, upon encountering a female anglerfish, immediately latches onto her body and becomes completely fused with her. This is a complete, watery union where the male and female anglerfish are connected by blood, and the male receives oxygen and nutrients from the female's body. Without eyes or even a digestive system, the male anglerfish lives a comfortable life, resting in his wife's "arms" and living carefree. Although the male anglerfish has almost no functional organs, he has a pair of well-developed testes capable of producing sperm. In reality, the female anglerfish's only purpose in nurturing the male parasite is to obtain its sperm to become a hermaphrodite. How interesting the "little husband" in the "daughter country" is, and how the reproductive method is!
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