Animals and plants developed their unique species over time being separated by distance and physical barriers. Sometimes natural phenomena like storms or floods can carry a species outside its normal range, but mostly, species stay at home. Unfortunately, humans have made it easy for some species to travel and to over populate in territories where there are no natural checks or predators. Such is the case of the Suez Canal. As a direct link between the Indian Ocean and the Mediterranean Sea, marine species can swim or hitch a ride on vessels. Many invasive species have replaced the residents of the Mediterranean and impacted the economic vitality of the fishing industry.
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