About This Lesson
Put your engineering skills to the test as you design a strong, but camouflaged, underwater home for an octopus.
One of the world’s most famous cephalopods, octopuses are well known for their soft, round heads, bulging eyes, and eight sucker-covered arms. Though they live in all the world’s oceans, octopuses display incredible variety across over 300 species—from the giant Pacific octopus, which measures up to 13 feet across, to the star-sucker pygmy octopus at barely an inch. Some, like the argonaut, spend their lives floating across the open ocean. However, most octopuses make their homes on the ocean floor in a den, just like the one author Randi Sonenshine describes in her book, The Den That Octopus Built.