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.

A-P-H-O-T-O Wildlife Stock Image Library
Hancockia uncinata (Hesse, 1872) - A Sea slug (Sea slug images)
Sea slug
Hancockia uncinata
- dorsal view (Lesceave) 1

Sea slug
Hancockia uncinata
- dorsal view (Lesceave) 2

Sea slug
Hancockia uncinata
- cnidosacs 1

Specimen above was found at Lesceave, Praa Sands, near Helston, Cornwall, 02.11.20.

Sea slug
Hancockia uncinata
- specimen one / dorsal view 1

Sea slug
Hancockia uncinata
- specimen two 1

Sea slug
Hancockia uncinata
- specimen two 2

Sea slug
Hancockia uncinata
- specimen one / cerata 1

Sea slug
Hancockia uncinata
- specimen one / ceras 1

Sea slug
Hancockia uncinata
- ceras with cnidosacs 1

Sea slug
Hancockia uncinata
- rhinophore 1

Sea slug
Hancockia uncinata
- oral lobe with papillae 1

Sea slug
Hancockia uncinata
- specimen one / lateral view 1

Sea slug
Hancockia uncinata
- specimen one lateral view 2

The specimens above were found on its food source, the hydroid Clytia hemisphaerica, at Newlyn Marina, Newlyn, Cornwall. 18.05.17. Specimen One was a fully mature adult approx. 14mm.

Sea slug
Hancockia uncinata
- dorsal view 1

Sea slug
Hancockia uncinata
- dorsal view 2

Sea slug
Hancockia uncinata
- rhinophore 1

Sea slug
Hancockia uncinata
- rhinophore 2

Sea slug
Hancockia uncinata
- cerata 1

Sea slug
Hancockia uncinata
- cerata 2

Sea slug
Hancockia uncinata
- hand-like oral lobes 1

Sea slug
Hancockia uncinata
- hand-like oral lobes 2

Specimen above was found in sediment after washing hydroid and sediment covered large brown algae in a bucket of water. Specimen found at Newlyn Marina, Newlyn, Cornwall. 12.08.15.

Sea slug
Hancockia uncinata
- lateral view 1

Sea slug
Hancockia uncinata
- lateral view 2

Specimens above found amongst a sample of fouling taken from the side of a pontoon at Mylor Marina, Mylor Churchtown, near Penryn, Cornwall. 12.10.15.

Sea slug
Hancockia uncinata
- juvenile dorsal view 1

Sea slug
Hancockia uncinata
- juvenile dorsal view 2

Sea slug
Hancockia uncinata
- juvenile dorsal view 3

Sea slug
Hancockia uncinata
- juvenile lateral view 1

Sea slug
Hancockia uncinata
- juvenile dorsal view 4

Sea slug
Hancockia uncinata
- with 0.1mm division rule 1

Specimen above, a 2-3mm juvenile, was found on the non-native red algae Pikea californica which was covered with the hydroid Clytia hemisphaerica, the sea slugs food. Specimen found at Newlyn Marina, Newlyn, Cornwall. 23.07.15.

Sea slug
Hancockia uncinata
- dorsal view 3

Sea slug
Hancockia uncinata
- spawn coil 1

Specimen above found on red algae collected subtidally at Battery Rocks, Penzance, Cornwall, 06.10.17.

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.

Conchological Society of Great Britain and Ireland

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

Marine Biological Association MBA

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.

NBN National Biodiversity Network

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.

World Register of Marine Species or WoRMS

The World Register of Marine Species or WoRMS.

Hancockia uncinata sea slug images
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.