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.

Sea Squirts and Ascidians (Tunicate images)
Ascidiacea (Class) > Aplousobranchia (Order) > Clavelinidae (Family)

Clavelina
Clavelina lepadiformis (Müller, 1776)
- Transparent or Light bulb sea squirt

Ascidiacea (Class) > Aplousobranchia (Order) > Didemnidae (Family)

Didemnum
Didemnum maculosum (Milne-Edwards, 1841)
- A Sea squirt

Didemnum sp. probably D. maculosum - A Sea squirt

Diplosoma
Diplosoma listerianum (Milne-Edwards, 1841)
- Jelly crust tunicate

Diplosoma spongiforme (Giard, 1872) - A Sea squirt

Lissoclinum
Lissoclinum perforatum (Giard, 1872)
- White perforated sea squirt

Polysyncraton
Polysyncraton bilobatum Lafargue, 1968 - A Sea squirt

Trididemnum
Trididemnum cereum (Giard, 1872)? - A Sea squirt

Unknown species of mauve didemnid
- Newlyn Marina 12.09.15

Ascidiacea (Class) > Aplousobranchia (Order) > Polyclinidae (Family)

Aplidium
Aplidium elegans (Giard, 1872) - Sea strawberry
Aplidium cf. glabrum - A Sea squirt
Aplidium nordmanni (Milne-Edwards, 1841) - A Sea squirt
Aplidium pallidum (Verrill, 1871) - White flake-ascidian
Aplidium turbinatum (Savigny, 1816) - A Sea squirt
Aplidium species - possibly A. punctum - A Sea squirt

Aplidium elegans and A. turbinatum synonymous with Sidnyum elegans and Sidnyum turbinatum.

Morchellium
Morchellium argus (Milne-Edwards, 1841) - A Sea squirt

Synoicum
Synoicum incrustatum (Sars, 1851) - A Sea squirt

Ascidiacea (Class) > Phlebobranchia (Order) >
Ascidiidae (Family)

Ascidia
Ascidia conchilega Muller, 1776 - A Sea squirt
Ascidia mentula Müller, 1776 - A Sea squirt

Ascidiella
Ascidiella aspersa (Müller, 1776) - Dirty sea squirt
Ascidiella scabra (Müller, 1776) - A Sea squirt

Phallusia
Phallusia mammillata (Cuvier, 1815) - A Sea squirt

Ascidiacea (Class) > Phlebobranchia (Order) >
Cionidae (Family)

Ciona
Ciona intestinalis (Linnaeus, 1767)
- Sea Vase or Yellow sea squirt - native

Ciona robusta Hoshino & Tokioka, 1967 - was (Type A)
- A non-native sea squirt

Ascidiacea (Class) > Phlebobranchia (Order) >
Corellidae (Family)

Corella
Corella eumyota Traustedt, 1882
- Orange-tipped sea squirt, a non-native invasive species

Ascidiacea (Class) > Phlebobranchia (Order) > Perophoridae (Family)

Perophora
Perophora listeri Wiegman, 1835 - A Sea squirt (native)
Perophora japonica Oka, 1927 - Creeping sea squirt, a non-native invasive species

Ascidiacea (Class) > Stolidobranchia (Order) > Molgulidae (Family)

Molgula
Molgula complanata Alder & Hancock, 1870 ?
- A Sea squirt

Molgula manhattensis (De Kay, 1843) ? - Sea grapes
Molgula socialis Alder, 1863? - A Sea squirt

Ascidiacea (Class) > Stolidobranchia (Order) >
Pyuridae (Family)

Microcosmus
Microcosmus claudicans (Savigny, 1816) - A Sea squirt

Pyura
Pyura microcosmus (Savigny, 1816) - A Sea squirt
Pyura tessellata (Forbes, 1848) - A Sea squirt

Ascidiacea (Class) > Stolidobranchia (Order) >
Styelidae (Family)

Asterocarpa
Asterocarpa humilis (Heller, 1878) - Compass sea squirt, a non-native invasive species

Botrylloides
Botrylloides leachii (Savigny, 1816)
- A Colonial ascidian

Botrylloides violaceus Oka, 1927
- Orange cloak sea squirt (non-native species)

Botryllus
The Botryllus section is currently in the process of being expanded. New pages are in the process of being added to show the variation and variety of colour morphs of members of this genus.
Botryllus schlosseri (Pallas, 1766) - Star ascidian
Botryllus schlosseri (Pallas, 1766)
- Star ascidian images from Newlyn, Cornwall.

Botryllus schlosseri (Pallas, 1766)
- Star ascidian - Blue-green morphs

Botryllus schlosseri (Pallas, 1766)
- Star ascidian - Brown-cream morphs

Botryllus schlosseri - Star ascidian - tadpole larva

Dendrodoa
Dendrodoa grossularia (Van Beneden, 1846)
- Baked-bean sea squirt or Currant squirter

Distomus
Distomus variolosus Gaertner, 1774
- Lesser gooseberry sea squirt

Polycarpa
Polycarpa pomaria (Savigny, 1816) - A Sea squirt
Polycarpa scuba Monniot C., 1971 - A Sea squirt

Stolonica
Stolonica socialis Hartmeyer, 1903
- Orange sea grapes or Squirt

Styela
Styela clava Herdman, 1881 - Leathery or Folded sea squirt, a non-native invasive species

Tunicates to be identified

Pelagic Tunicates

Thaliacea (Class) > Doliolida (Order) > Doliolidina (Suborder) > Doliolidae (Family)

Doliolum
Doliolum species (Newlyn 04.07.17)
- A pelagic tunicate

European Names - Ascidians, Tunicates, Seescheiden, Zakpijpen, Ascidies, Ascidias, Ascidie.


Sea Squirt Ascidian Tunicate Images UK