Thaliacea is a class of marine chordates within the subphylum Tunicata, comprising the salps, pyrosomes and doliolids. Unlike their benthic relatives the ascidians, from which they are believed to have emerged, thaliaceans are free-floating (pelagic) for their entire lifespan. The group includes species with complex life cycles, with both solitary and colonial forms.
A salp or salpa is a barrel-shaped, planktonic tunicate in the family Salpidae. It moves by contracting, thereby pumping water through its gelatinous body; it is one of the most efficient examples of jet propulsion in the animal kingdom. The salp strains the pumped water through its internal feeding filters, feeding on phytoplankton.
Batillaria is a genus of small salt marsh or mudflat snails, marine gastropod mollusks in the family Batillariidae, the horn snails.
Thylacodes zelandicus is a species of sea snail, a worm snail or worm shell, a marine gastropod mollusc in the family Vermetidae, the worm snails. This species was previously known as Serpulorbis zelandicus.
Notoacmea is a southern genus of true limpets, marine gastropod molluscs in the subfamily Lottiinae of the family Lottiidae, the true limpets.
Patelloida is a genus of sea snails or true limpets, marine gastropod molluscs in the subfamily Lottiinae of the family Lottiidae, one of the families of true limpets.
Lottiidae is a family of sea snails, specifically true limpets, marine gastropod mollusks in the superfamily Lottioidea and the clade Patellogastropoda.
Crepidula, commonly known as the slipper snails, slipper limpets, or slipper shells, is a genus of sea snails, marine gastropod mollusks in the family Calyptraeidae. This family includes the slipper snails (Crepidula), hat snails (Calyptraea), spiny slipper snails (Bostrycapulus), and cup-and-saucer snails (Crucibulum) as well as Crepipatella, Siphopatella, Grandicrepidula, and Maoricrypta.
Pseudostomatella is a genus of small sea snails, marine gastropod mollusks in the subfamily Stomatellinae of the family Trochidae, the top snails.
Clavocerithium is a genus of sea snails, marine gastropod mollusks in the family Cerithiidae.
Clypeomorus is a genus of sea snails, marine gastropod mollusks in the subfamily Cerithiinae of the family Cerithiidae.
Bembicium auratum, commonly known as the gold-mouthed conniwink, is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles.
Vermetus is a genus of sea snails, marine gastropod mollusks in the family Vermetidae, the worm snails or worm shells.
Solmundella is a genus of hydrozoan in the family Solmundaeginidae. It is monotypic, with the single species Solmundella bitentaculata.
Actinia is a genus of sea anemones in the family Actiniidae. Actinia display a rare form of heteromorphosis in which a cut inflicted on a specimen can develop into a second mouth.
Prayidae is a family of marine invertebrates in the order Siphonophorae. They are colonial, and the colonies can superficially resemble jellyfish; although they appear to be a single organism, each specimen is actually a colony of Siphonophora.
Doliolidae is a family of tunicates in the order Doliolida. Members of the family are pelagic and often found far away from coastlines.
Granata maculata is a species of small sea snail, a marine gastropod mollusc in the family Chilodontaidae.
Leucothea is a genus of ctenophores in the monotypic family Leucotheidae.
Abyla is a genus of colonial siphonophore in the subfamily Abylidae and the suborder Calycophorae. The genus contains three species and was established by Quoy and Gaimard in 1827.
