1) The ocean is home to an incredible variety of marine life, including thousands of species of fish, mammals, reptiles, and invertebrates.

2) The world's oldest living plant is believed to be a clonal shrub called "Old Tjikko" in Sweden, estimated to be over 9,500 years old.

3) The blue whale is the largest animal to have ever existed, with an average length of about 82 feet (25 meters).

4) The word "music" contains two vowels: U and I.