There are many more kinds of marine (ocean) animals than terrestrial, in part because animals first evolved in the ocean.

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The ocean is home to a vast diversity of life, with many more species of marine animals than terrestrial ones. This is partly because life on Earth began in the oceans around 3.5 billion years ago, giving marine life more time to diversify and evolve into the myriad forms we see today.

There Are Many More Kinds of Marine (Ocean) Animals Than