Hydrozoans

Turritopsis nutricula McCr. A.Lateral view of young. B.Lateral view of older specimen. C.Ventral view of young.

Obelia bisucpidata Clark.

Stomatoca apicata, female (After Mayer).

Tiaropsis diademata. After A. Agassiz.

Tubularia larynx Ell. & Sol..

Figure 11.Color figures of skeleton of various Alaskan stylasterids: A, E, G Stylaster brochi B, F, H Stylaster verrillii C Stylaster stejnegeri, D Errinopora dichotoma. A holotype, USNM 43264 B arborescent colony, USNM 1027819 C holotype, USNM 43271 D holotype, USNM 1123508 E large delicate sponge encrusted colony, USNM 1123304 F holotype of Allopora moseleyi, USNM 6851 G massive colony, USNM 1123006 H syntype, USNM 4193.

Millepora sp. 1 is not the primary subject of the video clip; the primary subject is Caranx sexfasciatus (Bigeye trevally). Coral Sea, Schooling, Duration 45 seconds

Davenport, California, USA

Bougainvillia carolinensis.

Eudendrium dispar Ag. B.Hydranth, enlarged.

Agalma rubra.

Turritopsis nutricula.

Obelia commissuralis McCr..

Stomotoca apicata (McCr.). A.Male. B.Female.

Eutima mira (McCr..

Clytia bicophora Ag..

Figure 12.Holotype of Errinopora dichotoma, USNM 1123508: A branch cross section B colony surface showing gastro– and dactylopores C dactylopore with dactylostyle (upper) and secondary gastropore (lower) D gastropore E, J gastrostyles F–I coenosteal texture K gastrostyle spines L–M dactylostyle.

Davenport, California, USA

Tubularia spectabilis (Ag.) A.Gnophore containing an actinule.

Tubularia couthanyi A.Sessile medusa.

Sertularella rugosa (Linn.).

Allopora oculina, Eurenberg.