Australian Fish Evolving and Walking on Land

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The Blennie, a fish found off the coast of Sydney, Australia; is evolving to jump onto shoreline rocks to hide from predators according to mnn.com.

This could mean that fish are evolving to become land animals, but the fish still need water to breath. Instead of being in water they get it from the ocean’s spray, or rain water.

“Researchers at the University of New South Wales in Australia have been studying several species of blenny fish, or ‘blennies’ that live on Rarotonga, the largest of the Cook Islands, and have found them to be surprisingly adept at life on terra firma,” reported mnn.

The researchers found that this problem is most likely to avoid predators that swim in with the rising tide, mainly bigger fish like flounders and lionfish.

Moving onto land has additional benefits for blennies. “Holes in the rocks provide sheltered nests for laying eggs, and they can maintain their diet of algae and bacteria by nibbling them off rocks,” reported newscientist.

Animals first left the oceans for dry land nearly 400 million years ago, at the end of the Devonian Period.

“At low tide most of the blennies were on the rock shelf in the intertidal zone. Those remaining in the water actively avoided areas where there were predators, such as flounders, trevallies, wrasses and moray eels,” stated newsroom.