Cuttlefish are marine Cephalopod molluscs. They belong to the same class as squid, octopodes and the nautilus.
Cuttlefish have an internal shell (called a cuttlebone), large eyes, and eight arms and two tentacles furnished with finely toothed suckers, with which they grab their prey.
Cuttlefish eat small molluscs, crabs, shrimp, fish and other cuttlefish. Various sharks and fish prey on them. They live about 1 to 2 years. Cuttlefish are not fish but intelligent invertebrates related to the octopus, squid, and nautilus. Cuttlefish are active and aggressive predators that use their color-changing abilities and movement of their tentacles to mesmerize their prey
