Karina Sharma
Otters hold hands while sleeping to stay together in water.
They keep a favorite rock in an underarm pouch.
Otters juggle pebbles just for fun — true entertainers.
.
Otters have the densest fur of any animal on Earth.
.
They help protect kelp forests by eating sea urchins.
.
Otters are smart — they use rocks as tools to open shells.
.