TED-Ed
How Does a Jellyfish Sting?
Jellyfish are not aggressive creatures. They simply use their stinging cells as a defense mechanism. Some animals have developed adaptations that prevent them from being affected by a jellyfish's sting. Watch to find out the science...
Sophia Learning
Sophia: Animals: Invertebrates: Lesson 1
This lesson will explain the characteristics of animals that are classified as invertebrates. It is 1 of 4 in the series titled "Animals: Invertebrates."
NOAA
Noaa: Estuary Education: Invertebrates of the Tillamook Estuary
Students learn about Tillamook Estuary invertebrates and their importance in the food web. [4:25]