Simplify the following text for a Grade 13 native English-speaking person.
Original: Invasive species originated from the Red Sea and introduced into the Mediterranean by the construction of the canal have become a major component of the Mediterranean ecosystem , and have serious impacts on the Mediterranean ecology , endangering many local and endemic Mediterranean species .
Simplified: Invasive species coming from the Red Sea and introduced into the Mediterranean by the construction of the canal have become a major component of the Mediterranean ecosystem . They have serious impacts on the Mediterranean ecology , endangering many local and endemic Mediterranean species .