Ancient Squids Had Protective Shells
In the beginning the shells were a literal life-saver for these creatures, but over time it became a huge weakness.
Luckily these soft and vulnerable creatures were able to adapt to their environment and eventually lose their heavy, cumbersome shells.
Can you imagine a modern octopus or squid with a hard shell over its fleshy body?
Check out this exciting video from PBS Eons to learn more about these fascinating creatures and their ancestors.
Leave a comment below to let me hear your thoughts about this interesting discovery!