The book The Fish With the Minuter Animals of the Ocean was written by author Ernest Denny Here you can read free online of The Fish With the Minuter Animals of the Ocean book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Fish With the Minuter Animals of the Ocean a good or bad book?
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It is in the fine blood-vessels of the fringe of the gills that the blood is acted upon by the oxygen of the water, and from the gills it is car- ried to the general system. Fishes are endowed with much less vitality than warm-blooded ani- mals, respiring simply through the medium of CIRCULATION OF BLOOD IN FISHES. 15 water ; in other words, only availing themselves of the small quantity of oxygen which is contained in the air mixed with water. The number of aquatic respirations in fishes is be...tween twenty and thirty in a minute ; and the surface of the gills over which the blood is distributed, that the water may act upon it, is surprisingly great. It has been calculated that the gills of a large skate present a surface equal to 2, 250 square inches, or about the whole exter- nal surface of the human body. One creature, the Perca scandens, has a very remarkable struc- ture adapted to maintain respiration, and, conse- quently, to support life for a considerable time when out of the water.
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