Sea Anemones

Heteractis aurora is not the primary subject of the video clip; the primary subject is Amphiprion chrysopterus (Orangefin anemonefish). South Pacific Ocean, Duration 13 seconds

South Pacific Ocean, Duration 9 seconds

Macrodactyla doreensis is not the primary subject of the video clip; the primary subject is Periclimenes brevicarpalis (Popcorn shrimp). Coral Sea, Duration 17 seconds

Entacmaea medusivora is not the primary subject of the video clip; the primary subject is Sphaeramia orbicularis (Orbicular cardinalfish). North Pacific Ocean, Duration 26 seconds

Atlantic Ocean, Caribbean Sea, Duration 12 seconds

Cerbère Pyrénées-Orientales France

Cerbère Pyrénées-Orientales France

Sødringholm, Randers Fjord

Nordsømuseet Hirtshals

Limfjorden Ertebølle

Nordsømuseet Hirtshals

Kattegatcentret Grenå

Eloactis producta.

Figure 5.Bunodosoma cavernatum. A Live specimen in natural habitat B Oral view C Lateral view D Detail of directives; notice siphonoglyph E Cross section through proximal column showing oocytes F Cross section through tentacle G Longitudinal section through column showing vesicles H Longitudinal section though base showing basilar muscles I Longitudinal section through margin showing acrorhagi and marginal sphincter muscle J–T Cnidae.– acrorhagi: J basitrich K holotrich; actinopharynx: L basitrich M microbasic p-mastigophore; column: N small basitrich O basitrich; filament: P basitrich Q microbasic b-mastigophore R microbasic p-mastigophore; tentacle S basitrich T spirocyst. Abbreviations.– acr: acrorhagi, bm: basilar muscle, c: column, d: directives, e: epidermis, fo: fosse, g: gastrodermis, lm: longitudinal muscles, m: mesoglea, mp: marginal projection, o: oocyst, od: oral disc, pd: pedal disc, pm: parietobasilar muscle, rm: retractor muscle, s: siphonoglyph, sp: sphincter, t: tentacle, vs: vesicles. Scale bars: A–C: 10 mm; D–I: 200 μm; J–T: 25 μm.

Figure 3.Endodermal circumscribed marginal sphincter muscles of Stylobates spp. a, b Palmate marginal sphincter muscle of Stylobates birtlesi sp. n. a paratype MTQ G57581 b paratype KUDIZ 003352 c-e Pinnate marginal sphincter muscles. c Stylobates aeneus (from Dunn et al. 1981) d Stylobates cancrisocia (from Carlgren 1928a) e Stylobates loisetteae (from Fautin 1987).

Heteractis aurora is not the primary subject of the video clip; the primary subject is Amphiprion chrysopterus (Orangefin anemonefish). South Pacific Ocean, Duration 38 seconds

South Pacific Ocean, Duration 21 seconds

Macrodactyla doreensis is not the primary subject of the video clip; the primary subject is Amphiprion clarkii (Clark's anemonefish). Coral Sea, Shot at dusk, Duration 21 seconds

North Pacific Ocean, Duration 28 seconds

Atlantic Ocean, Caribbean Sea, Duration 6 seconds

Cerbère Pyrénées-Orientales France

Sødringholm, Randers Fjord

Nordsømuseet Hirtshals

Limfjorden Ertebølle