Nurse sharks are bottom-dwelling, slow-moving creatures that are safe for humans. They can grow to be huge—up to 14 feet long—and have powerful jaws loaded with thousands of small, serrated teeth.
Koalas can be found in a variety of open forest and woodland groups, but the presence of a small number of food trees ultimately characterizes their habitat. Where food trees grow on more rich soils and along watercourses, koalas can be found in higher quantities.