Tag Archives: Dolphin

Modern-Day Extinctions

I know this may be a controversial one, but mass extinctions change the world’s ecosystem drastically and sometimes take the Earth millions of years to recover. But these mass extinctions have always been because of natural disasters; meteors, volcanoes, sea … Continue reading

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They did it on Porpoise

  Cetaceans are an order of animals that include all whales, dolphins and porpoises. They are secondarily aquatic mammals, their ancestors once walked on land; they need to return to the surface to breathe air; they have a pentadactyl limb … Continue reading

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