Earth to Luna!

Luna's family visits a small coastal town in Japan where their friend finds a rare pearl in an oyster.

After talking to Grandma and Grandpa on the phone, the trio gets to wondering about how telephones work.

While heading to the beach, Luna's family notices crabs hanging out eating leaves; later, they notice the crabs' burrows are completely covered with water.

Luna, Jupiter, Clyde, and Alice conduct scientific research to find out where the water from rivers comes from.

Luna's family goes swimming in the Dead Sea where it is very easy to float; Jupiter doesn't even need his floatation devises; Luna wonders what's so special about the Dead Sea.

Luna, Jupiter and Clyde are in Hawaii with their friend Iolana, and they notice ants heading into the camper and wonder why they walk in a line.