Turtles breathe with their butts, along with dragonfly nymphs and sea cucumbers. But not all kinds of turtles can make that “trick”. Only some species of turtles can do that. These species have developed ways to pick up oxygen even when submerged. They can nestle down underwater and slow their metabolism down so much they barely need any oxygen. They can then take a small amount of water... 

This planet was discovered by Galileo and it is also known as the ring planet. Haven’t you guessed? Yes, it is Saturn! Though Saturn may be best known for its rings, there are other interesting things about the planet and its surrounding moons. Saturn may be the second largest planet in the solar system, but it holds the record for least dense. Water has a density of 1.0 grams per centimeter cubed....