The Guinness World Record holder for the tallest sandcastle was made in Blokhus, Denmark, on 2 July 2021. How tall is it?

71% of the Earth is covered in water. What percentage of that water is held in oceans?

Contrary to popular belief, the heart of a blue whale weighs about 400 pounds on average.

This reef in the Coral Sea near Australia's coast is over 1,500 miles long!