Fish with pelagic countershading

What is natural theology?
It is a fact that all plants and animals are superbly adapted to their climate, surroundings, and way of life. The polar bear has thick white fur for warmth and camouflage in the snow, ducks have webbed feet for swimming, and moles have strong front feet for digging. According to Darwin, these adaptations were the outcome of natural selection. However, an English clergyman, William Paley, had another theory called natural theology. According to him, the existence of adaptations proves the existence of a Creator who is responsible for these adaptations, and by studying natural history, we can understand the nature of God.

Examples of adaptations:

Adaptation is the ability of a living being to adapt to its environment by changing its function or behaviour. One of the very well known examples of animal adaptations is that of the ships of the desert, the camels. To protect itself from the blowing sand of the desert, a camel has two rows of long and thick eyelashes. Its nostrils can be closed to prevent the blowing sand from getting in. Its hooves with broad and leathery pads create a snowshoe effect, and prevent a camel from sinking in the sand. Its hump that stores fat helps a camel sustain itself for long spans without food and water. Polar bears, which inhabit the polar regions of the planet, have adapted to the aquatic environment. They have a thick layer of fat, and dense layers of fur to protect them from the cold. Giraffes exhibits some interesting adaptations that help them survive in the savannas. Their fringed tails help keep flies and insects away. Their long legs and long neck provide them with the height to reach tall trees. The long tongue helps a giraffe strip off leaves, while its tough lips protect it from thorns.

A unique animal adaptation observed in certain fish is that of counter shading. Pelagic fish a re often light coloured at the bottom and dark towards the top. Due to this colouration, the birds flying atop cannot see the fish easily due to their dark colour, while the fish swimming below them do not easily see their light coloured


Sea Frontiers 1974 Jan.- Feb. (Pelagic Adaptations, Artificial Reefs, freedom to fish, king of the winged boats, 20)
Book (american color plate)

Fish Stocks/ Windpower/ Wave Generators

2006-11-14 00:23:43 by jaybug39

I have read that ocean fish stocks will be gone in a few years. And I have been thinking since I heard that Massachusetts refused to build wind turbines in Long Island Sound as they were unattractive, why not build some in the pacific where we could create national sea life refuges?
This would help out coastal communities in several regards. Some people would come see the turbines, much like some people visit lighthouses. The energy produced would ease any difficulties coastal communities may face from their currently existing long distance power transmissions. And they would get the benefit of knowing that fish will be around in the future


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