Simple Animals: Sponges, Jellies & Octopuses

Simple Animals: Sponges, Jellies & Octopuses

Some animals, like jellyfish and simple animals, can function without hearts, brains and other vital organs.

11:31

Key Facts In This Video

  • 1

    A major distinction of simple animals is their tissue complexity. (0:50)

  • 2

    The first germ layers appeared about 535 million years ago. (5:42)

  • 3

    Mollusks are simple animals, yet can be very smart. (8:36)

See all

Aquatic Life

Octopuses

African-American Studies

Hearts

Get smarter every day! Like us on Facebook.
You'll get the most interesting and engaging topics in your feed, straight from our team of experts.