Question

What human and natural changes affected the sea cow

Answer 1

This area was probably not the optimal habitat for the species. There is evidence that the sea cows were often injured or suffocated by ice floes and were not able to find enough food to stay healthy. This cold-water adapted species had in fact evolved from sirenian ancestors that had formerly occupied tropical warm waters along the California coast with its warm, shallow bays some 35 million years ago.