A shark’s skeleton is made entirely of cartilage, which is the same tough, flexible, and lightweight tissue that shapes the tip of your human nose and outer ears.

Small, tiny gifts found in Christmas stockings are usually referred to as stocking stuffers.

The closest living land relative to the manatee is the elephant. Another close land relative is the hyrax, a small, furry mammal. Despite living in the water, manatees share a common four-legged land ancestor with these animals from more than 60 million years ago.

The two TV series from the 1980s that featured a character named Uncle Jesse are The Dukes of Hazzard (where Denver Pyle played Uncle Jesse Duke from 1979 to 1985) and Full House (where John Stamos played Uncle Jesse Katsopolis starting in 1987).

The scientific name Citrus paradisi refers to the grapefruit. It is a large, juicy citrus fruit with a sour to semi-sweet and slightly bitter taste.