especially octopi

):<

that they're the single most delicious thing in the ocean

MMM calamari

Nautiluses are far and away the most unusual cephalopods in these regards- they live up to 20 years, and are much slower growing

Nautiloids are some of the coolest marine creatures. If I could own any marine organism, I'd keep one of these. They're fascinating to look at, but they don't like to do too much.

with the possible and unfortunate exception of nautiluses, which are being overfished by humans for their beautiful shells

This makes me sad. Again... Overfishing... We suck as a species.

They're capable of changing the entire color of their body multiple times per second.

They also match the texture of their surroundings to help blend in by way of their papillae.

Cephalopods are some of the most amazing creatures on this planet (maybe any planet).