A beautiful animal but a deadly hunter. The common cuttlefish, Sepia officinalis, has an amazing ability to rapidly change its colour - so rapid in fact that waves of different colours sometimes seem to flow across its body. It catches its prey - small fish, crustaceans and so forth - by stealth, slowly stalking them and then shooting out two very long tentacles which have broad, flattened ends covered in suckers. More often seen in the south and west of the UK.
Plymouth Breakwater, Devon