Future Amazon River Dolphins

Today many amazon river dolphins are dying because of pollution and high-water temperatures. I think in about a thousand years amazon river dolphins will have developed light blue and heavier skin. It will hold water to drink and help cool down, so when the water gets hotter the dolphins will use their light blue skin to maintain body temperature. It will help them blend in with the surroundings too. In case their skin is not enough they will have strong yellow tail fins so they can easily swim out of the dangerous area. I also think amazon river dolphins will get even sharper teeth and more of them so they can easily chew down plastic bottles and other waste. Finally, I think they will develop two more black and indestructible dorsal fins so they can destroy any prey coming their way and help make their way out of waste.