Small but feisty: the clever cuttlefish that changes colour to bedazzle predators

The flamboyant cuttlefish flashes patterns and psychedelic colours and waves its arms in a hypnotic display

• More fantastic invertebrate nominations here

If you love a feisty rebel, look no further than the flamboyant cuttlefish, on the 10-strong shortlist for the Guardian's invertebrate of the year 2025. It is small, smart, capable of spectacular displays and has fought against the odds to become the deadliest of its kind.

This creative creature is small for its class of cephalopods, which includes octopus, squid and nautilus, at just 6-8cm. Due to the relatively reduced size of its air-filled cuttlebone, a unique internal shell used for buoyancy that lends these molluscs their unique, rather alien-spaceship way of swimming, it cannot float or hover as well as its cousins.

Between 24 March and 2 April, we will be profiling a shortlist of 10 of the invertebrates chosen by readers and selected by our wildlife writers from more than 2,500 nominations. The voting for our 2025 invertebrate of the year will run from midday on Wednesday 2 April until midday on Friday 4 April, with the winner to be announced on Monday 7. Read the other wonderful nominations here.