Here are five simple ways to say "Sea turtles are the oldest reptiles" that are easy for an 8-year-old to understand:
- Sea turtles are the oldest living reptiles.
- Sea turtles are some of the most ancient reptiles on Earth.
- Sea turtles have been around longer than most other reptiles.
- Sea turtles are among the oldest reptile species.
- Sea turtles lived on Earth a very, very long time ago — older than many other reptiles.