Squid Anatomy

Squid are cephalopods, and as such, they possess the same anatomical base as other cephalopods, including a syphon, a beak, and a pair of large digestive glands.  Beyond this, they are also Coleoids, which means they share characteristics with Octopuses and particularly with Cuttlefish that they do not share with their more distant cousins the … Read more

Octopuses: Geniuses of the Invertebrate World

Octopuses are, hmmm well how can I put this? Octopuses are amazing, incredible, magnificent, wonderful, fascinating, in many ways unique and mind-blowingly intelligent.  They are also cephalopods, and within that coleoid cephalopods. Cephalopod Genetics – Californian two-spot octopus (Octopus bimaculoides) – first to have genome sequenced – expanded genes for neurone development. The only truly … Read more

Squid:- The Ocean’s Fast and Furious

Sepioteuthis sepioidea Caribbean Reef Squid

Squid are fast, diverse, colourful, dynamic, intelligent and delicious. According to the Catalogue of life there 298 species of squid, divided between three the orders known to science.  Squid are far more numerous in our oceans than their other cephalopod cousins.  Some squid are so common they support immense fisheries, half a million tonnes of … Read more

Vampire Squid: The Surprising Facts

Artist's Image of a Vampire Squid, adapted from Chun 2003

Vampire Squid, there is only one species, are Coleoid Cephalopods currently classified as being the sole member of the family Vampyroteuthidae and the order Vampyromorphida. They are, like all cephalopods, marine invertebrates.  They are also unique, fascinating and still rather little studied. Two things they are not, in any way, are 1) squids and 2) … Read more

Cuttlefish Anatomy 101: A Look Inside

Cuttlefish Anatomy: Introduction Cuttlefish anatomy, because cuttlefish are cephalopods, arises from the same anatomical base as other cephalopods, including a syphon, a beak and a pair of large digestive glands.  Beyond this they are also Coleoids, which means they share characteristics with Octopuses and Squid that they do not share with their more distant cousins … Read more

Cuttlefish: Colourful Living Artists of the Oceans

A Live Cuttlefish

Cuttlefish; Underwater Artists – Introduction. Cuttlefish are amazing creatures. Intelligent, underwater living works of ephemeral art; they are often called the chameleons of the sea.. Their incredible beauty is adaptable and constantly changing, it is impossible to become bored watching them. We are only just beginning to learn about the true complexity of their short … Read more

Order Nautilida: The Ancient and Enigmatic Nautilus

A live Nautilus with feeding tentacles extended.

Introduction to the Nautilus The Nautiluses, or Nautili are a small, and very beautiful, group of living, shelled cephalopods.  The word “Nautilus” shares a root with ‘nautical’ and means ‘Sailor’. It is derived from the ancient Greek ναυτίλος.   Nautilus is the singular, the plural is either nautiluses or nautili.  Nautiloid is another noun which can … Read more