Octopus Quiz: Arms, Ink and Blue Blood
Arms or tentacles? 6 questions on octopus, squid and cuttlefish: blue blood, the colossal squid and an octopus that carries its house.
- Questions
6 - Length
About 4 min
Spoiler: show the questions 6 questions
- Which of these have two long tentacles as well as eight arms? Select all that apply.
- Why is an octopus's blood blue?
- What do an octopus’s two branchial hearts pump blood through?
- A large horse can weigh about 500 kg. About how heavy was the largest recorded colossal squid?
- Besides color, what can this octopus change to blend into rock?
- What do some octopuses carry around to use as a shelter?