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.

A-P-H-O-T-O Wildlife Stock Image Library
Tetrastemma herouardi (Oxner, 1908) - (Nemertean / Ribbon worm Images)
Nemertean / Ribbon worm
Tetrastemma herouardi
- dorsal view 1

Nemertean / Ribbon worm
Tetrastemma herouardi
- dorsal view 2

Nemertean / Ribbon worm
Tetrastemma herouardi
- dorsal view 3

Nemertean / Ribbon worm
Tetrastemma herouardi
- ventral view 1

Specimen above found in a sample of algae taken at Albert Reef, Penzance, Cornwall. 24.03.15.

Nemertean / Ribbon worm
Tetrastemma herouardi
- dorsal view 4

Nemertean / Ribbon worm
Tetrastemma herouardi
- dorsal view 5

Nemertean / Ribbon worm
Tetrastemma herouardi
- dorsal view 6

Specimen above found in the bottom of a container containing a sample of various algae. Algal specimens taken from the lowershore at Chimney Rocks, Penzance, Cornwall. 08.01.15.

Nemertean / Ribbon worm
Tetrastemma herouardi
- microscope view head 1

Nemertean / Ribbon worm
Tetrastemma herouardi
- microscope view head 2

Nemertean / Ribbon worm
Tetrastemma herouardi
- proboscis and stylet 1

Nemertean / Ribbon worm
Tetrastemma herouardi
- proboscis and stylet 2

Specimen above found in an algae / sediment sample from the low tide mark, on the reef at Skilly, south of Newlyn, Cornwall. 17.06.15.

Nemertean / Ribbon worm
Tetrastemma herouardi
- in sediment of sample 1

Two small 3mm long specimens were found in the sediment of a small sample of bryozoan / algal turf. Sample taken just below the low tide level under an overhang at Vellan Drang, The Lizard, Cornwall. 25.09.14. I believe this is only the second UK record, and definately a first confirmed record for Cornwall. The species previously found off Pembrokeshire, Wales, and at Roscoff, France. Perhaps a good explanation for it being found in Cornwall, between these two areas. Being found at Sennen Cove and The Lizard, the species may be reasonably common and quite overlooked because of its size.

Nemertean / Ribbon worm
Tetrastemma herouardi
- with Star ascidians 1

Species seen under a rock amongst Star ascidians on the lowershore at Godrevy Point, near Gwithian, Hayle, Cornwall. 27.09.14.

Below, an unconfirmed record from Sennen Cove, Cornwall.

Nemertean / Ribbon worm
Tetrastemma herouardi ?
- on Callophyllis laciniata 1

Nemertean / Ribbon worm
Tetrastemma herouardi ?
- on Callophyllis laciniata 2

Images of species taken on the lowershore in an under boulder rockpool at Sennen Cove, Penwith, Cornwall. 19.09.12. Species found on Callophyllis laciniata, Beautiful Fan Weed, a red seaweed.

It's not clear whether the identification here is correct or not. Tetrastemma herouardi is a small nemertean species that can be pale pink, white, or a yellowish colour. It has a red stripe running down the centre of the body and should have four eyes (two pairs) either side of the stripe at the head. Sadly because the species was found accidentally whilst taking images of something else, no further investigation took place on the shore and therefore the species cannot be confirmed. The species is either very under-recorded or quite rare in the UK with only two confirmed records.

I must thank Juan Junoy here for his kind advice.

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.

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.

CISFBR or Cornwall and Isles of Scilly Federation of Biological Recorders

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.

Cornish Biodiversity Network

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.

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 link here is to the NBN Atlas.The link here is to the NBN Atlas.

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.

Over 99% of the species records on APHOTOMARINE are open source but they are also copyright David Fenwick. Species records published on APHOTOMARINE may not be used on any database, list or distribution map, without a signed user agreement. Cornish records that appear on APHOTOMARINE are recorded using the ERICA database to benefit recording in Cornwall and scientific and historical recording in general. No financial benefit must be taken from any record produced by David Fenwick, records are of educational benefit only. Records by David Fenwick must ''never'' be financially traded.

Tetrastemma herouardi Nemertean Ribbon worm 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.