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.
Spadella cephaloptera (Busch, 1851) - An Arrow worm (Chaetognatha images)
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Arrow worm
Spadella cephaloptera
- dorsal view 1
Spadella cephaloptera
- dorsal view 1
Arrow worm
Spadella cephaloptera
- lateral view 1
Arrow worm
Spadella cephaloptera
- head 1
Specimen above found on washing Saccorhiza polyschides, Furbellow holdfasts at Battery Rocks, Penzance, Cornwall, 21.08.17.
Arrow worm
Spadella cephaloptera
- on black background 2
Arrow worm
Spadella cephaloptera
- on black background 3
Arrow worm
Spadella cephaloptera
- anterior 1
Arrow worm
Spadella cephaloptera
- posterior 1
Arrow worm
Spadella cephaloptera
- with 0.1mm division rule 1
Arrow worm
Spadella cephaloptera
- eye spots 1
Arrow worm
Spadella cephaloptera
- hooks 1
Arrow worm
Spadella cephaloptera
- hooks 2
Arrow worm
Spadella cephaloptera
- posterior 2
Arrow worm
Spadella cephaloptera
- ova 1
Arrow worm
Spadella cephaloptera
- ova 2 ?
Arrow worm
Spadella cephaloptera
- glandular area and tail fin 1
Specimen above found on washing Saccorhiza polyschides, Furbellow holdfasts at Battery Rocks, Penzance, Cornwall, 25.07.17.
Arrow worm
Spadella cephaloptera
- on black background 4
Arrow worm
Spadella cephaloptera
- dorsal view anterior 2
Arrow worm
Spadella cephaloptera
- lateral view anterior 1
Arrow worm
Spadella cephaloptera
- lateral view 2
Arrow worm
Spadella cephaloptera
- left side of head under compound microscope 1
Arrow worm
Spadella cephaloptera
- head under compound microscope 1
Specimen above found at Skilly, south of Newlyn, Cornwall, 03.08.18.
Arrow worm
Spadella cephaloptera
- animal in-situ on rock 1
Arrow worm
Spadella cephaloptera
- animal in-situ on rock 2
Arrow worm
Spadella cephaloptera
- animal in-situ on rock 3
Specimen above found under a stone at the low water mark on a low spring tide at Hannafore, Looe, Cornwall, 19.03.22. The specimen was found using a x10 head visor.
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.