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.

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Sea slug
Janolus hyalinus
- dorsal view 1

Sea slug
Janolus hyalinus
- caruncle between rhinophores on head 1

Specimen above found in a small sample of algae collected from pontoons at Newlyn Marina, Newlyn, Cornwall, 22.10.18. This species and the related Janolus cristatus were very common at Newlyn during October 2018, after a summer bloom of Bugula neritina.

Sea slug
Janolus hyalinus
- dorsal view 2

Sea slug
Janolus hyalinus
- dorsal view 3

Sea slug
Janolus hyalinus
- dorsal view 4

Sea slug
Janolus hyalinus
- dorsal view 5

Specimen above found on washing large brown algae at Newlyn Marina, Newlyn, Cornwall, 26.07.18 and 31.07.17.

Sea slug
Janolus hyalinus
- adult dorsal view 1

Sea slug
Janolus hyalinus
- adult dorsal view 2

Sea slug
Janolus hyalinus
- adult ventral view 1

Specimens above found on washing the seaweed Sea Oak, Halidrys siliquosa, at Newlyn Harbour, Newlyn, Cornwall, 23.07.17.

Sea slug
Janolus hyalinus
- adult dorsal view 3

Sea slug
Janolus hyalinus
- adult dorsal view 4

Adult 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
Janolus hyalinus
- dorsal view 6

Sea slug
Janolus hyalinus
- dorsal view 7

Sea slug
Janolus hyalinus
- dorsal view 8

The specimen above was found during the MBA Bioblitz at Salcombe, Devon, 27.09.15.

Sea slug
Janolus hyalinus
- dorsal view 9

Sea slug
Janolus hyalinus
- dorsal view head 1

Sea slug
Janolus hyalinus
- lateral view 1

Sea slug
Janolus hyalinus
- lateral view 2

Sea slug
Janolus hyalinus
- dorsal view head 2

Sea slug
Janolus hyalinus
- juvenile 1

Sea slug
Janolus hyalinus
- caruncle between rhinophores on head 2

Juvenile specimen found in a small sample of bryozoan turf containing Scrupocellaria sp.. Sample taken from a cavity under a rock on the lowershore near Smeaton's Pier, St. Ives, Cornwall. 26.09.14 and 10.10.14. The species has also found at Newlyn Marina, Newlyn, Cornwall. 03.12.14.

Sea slug
Janolus hyalinus
- dorsal view 10

Sea slug
Janolus hyalinus
- radula teeth 1

Sea slug
Janolus hyalinus
- radula teeth 2

Specimen above was found on weed washing large brown algae from pontoons at Newlyn Marina, Newlyn, Cornwall, 04.10.18.

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.