Limapontia senestra - Ridged acteon or Falmouth sea slug (Sea slug images)

Juvenile specimen above found in a sample collected from a deep pool on the lowershore at Skilly, near Newlyn, Cornwall. 24.04.20.

Ridged acteon
Limapontia senestra
- lateral view 1

Ridged acteon
Limapontia senestra
- dorsal view 4

Ridged acteon
Limapontia senestra
- dorsal view 5

Ridged acteon
Limapontia senestra
- with 0.1mm division rule 1

Ridged acteon
Limapontia senestra
- dorsal view 6

Specimen above found in a sample collected from the lowershore at Challaborough, South Devon. 26.09.15.

Species originally called Cenia cocksi, the Falmouth sea slug, because it was first discovered in the UK at Falmouth by Mr. W.P. Cocks. Similarly the species was also known under another latin name and was called the Ridged acteon, Actaeonia corrugata, by Alder and Hancock. Ref: Shell Life, Edward Step. 1901.

APHOTOMARINE supports open source data recording and sharing for the benefit of wildlife, recorders, research, science and education. The project recommends the following websites and works with the following bodies and organisations.

The Conchological Society of Great Britain and Ireland
Helping to understand, identify, record, and conserve molluscs.

The Marine Biological Association or MBA, based in Plymouth, is one of the world’s longest-running societies dedicated to promoting research into our oceans and the life they support. Since 1884 the MBA has been providing a unified, clear, independent voice on behalf of the marine biological community.It has a growing membership in over 40 countries.

The CISFBR or Cornwall and Isles of Scilly Federation of Biological Recorders is an independent umbrella organisation supporting independent recorders and recording groups in the county of Cornwall.

The Cornish Biodiversity Network
or CBN is the largest open source wildlife database in Cornwall that sends open source data to the NBN (National Biodiversity Network). It is a new recording system based on the ERICA database, the largest recording resource in Cornwall. The CBN best supports the activities and needs of the independent recording community and recording groups in Cornwall.

The National Biodiversity Network or NBN is a charity that supports open source data sharing and recording supporting conservation, science and education. "Why do recorders need open source?". Simply because it supports the core values of wildlife recording and the free use of records and data over a very wide network that includes partners like the Natural History Museum.

The taxonomy used here is based on that of the following database, which is also used by the MBA, NHM and the NBN.

The World Register of Marine Species or WoRMS.

APHOTOMARINE

An educational resource dedicated mainly to the photography and diversity of marine life that can be found in coastal waters and intertidal areas of Great Britain and Ireland by David Fenwick.

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.