Monthly Archive: February 2014

Why do Fish have Gills

All animals respire which means that they use oxygen in the process of extracting energy from their foodstuffs, and produce carbon dioxide as a waste product. Mammals have lungs which provide a huge surface area for air to come into…
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Why do Fish have Scales

Everyone knows that some fish have scales. But why? What purpose do the scales serve for the fish? Most scientists believe the primary purpose of scales is to give the fish external protection. Scales come in several types and many…
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Starfish Starfish Brains

Starfish are marine invertebrates common throughout the world’s oceans.  There are nearly 2,000 known species and no doubt, as with practically all forms of marine life ( in particular the smaller ones), there are almost certainly many others as yet…
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