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NudiNotes

NudiNotes

Sometimes a short article on a topic can be informative and also easily remembered because it is focused and the information is not buried in lots of unrelated data.

This is the premise of NudiNotes – short interesting articles on specific sea slug related topics.

As this section is populated the accumulated NudiNotes will be placed under subject related headings.

Lookalikes to Look out for – No. 2. – Mexichromis pusilla & Verconia varians

Mexichromis pusilla - Verconia varians In No. 2 of this series Mexichromis pusilla (Bergh, 1874) and Verconia varians (Pease,1871) will be discussed. Both species were described back in the 19th century and have gone through a couple of name changes. The original...

FOUR AND MORE INTO ONE – Variation in Miamira moloch

Miamira moloch is a large to very large nudibranch of the Chromdorididae Family. It was first described as Ceratosoma moloch in 1988 by Rudman from two specimens, one collected from Heron Island, Central Queensland and the other from North Stradbroke Island, Southern...

REMARKABLE RHINOPHORES

When you don’t possess true eyes to recognise the shape of things, to see where you’re going, or what’s coming, then you must certainly have some other highly developed sense to survive. Living in a medium that has thousands of different compounds dissolved or...

STALKING WORMS – FEEDING BY Mariaglaja inornata

The Aglajidae are a carnivorous group of headshield sea slugs that actively hunt their prey. They are mostly fast moving in order to capture other sea slugs and polychaete worms. They are well-adapted for the task with clusters of sensory bristles located on the front...

Lookalikes to look out for – No. 1

Sometimes when reviewing images post-dive it’s easy to overlook an uncommon species if it has a similar appearance to a species that is frequently sighted. We know the common one well but have forgotten about the rarer one that looks similar - The Lookalike. This...

HANCOCK’S ORGANS – THE “RHINOPHORES” YOU HAVE WHEN YOU DON’T HAVE RHINOPHORES

We all know about the rhinophores of the true nudibranchs - those highly developed chemical-detecting “antennae” located anteriorly on their “head”. Even sea slugs other than the true nudibranchs such as the sea hares, and the side-gilled pleurobranchs have...

“WELL, THERE’S SOMETHING YOU DON’T SEE EVERY DAY.” – Tenellia sibogae

Tenellia sibogae (or Trinchesia sibogae, depending on whose taxonomy you follow) is usually sighted upon its food - arborescent hydroids of the Sertularella genus (usually identified as Sertularella diaphanous or Sertularella quadridens). If you are searching for sea...

SIX SEPARATE SOCKETS – Hexabranchus

Hexabranchus sanguineus The name says it all. It has six gills - Hexabranchus, and is blood-coloured - sanguineus. This species was originally described from the Red Sea. Specimens from that region are not red and white mottled as in the images posted here but are a...

UNIQUELY UNITED BUT DECEPTIVE DISPLAY – THE SUCTORIAL FEEDING POROSTOMATA NUDIBRANCHS

UNIQUELY UNITED BUT DECEPTIVE DISPLAY The Suctorial Feeding Porostomata Nudibranchs In a previous NudiNote - The Little Scraper - the radula of sea slugs was discussed. Mention was also made of those sea slugs that do not possess a radula. Among the dorid nudibranchs...

AUTOTOMY – THE SELF SACRIFICE DEFENCE

Autotomy - the Self Sacrifice Defence   The ability to cast off a particular section of their anatomy, in order to facilitate escape from a predator, is possessed by a wide range of animals. Although the phenomenon, even in the Mollusca, had been recognized...