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Sacoglossa are a superorder of small sea slugs and sea snails, marine gastropod mollusks that belong to the clade Heterobranchia known as sacoglossans. There are 284 valid species recognized within this superorder. [3] Sacoglossans live by ingesting the cellular contents of algae, hence they are sometimes called "sap-sucking sea slugs". [4]
This species of nudibranch shed their eggs in masses around 20 million offspring or more. [3] Egg shape is arranged in a spiral pattern in its own capsule and color ranges from white to pink (See Fig. 1). [17] Egg composition arranges in two equivalent layers which can be detected by electron micrographs. [18]
Glaucus atlanticus is the blue sea slug shown here out of water on a beach, and thus collapsed; however, touching the animal directly with your skin can result in a painful sting, with symptoms similar to those caused by the Portuguese man o' war The slug in the water
Costasiella kuroshimae (also known as a leaf slug, sea sheep, or leaf sheep) is a species of sacoglossan sea slug. Costasiella kuroshimae are shell-less marine opisthobranch gastropod mollusks in the family Costasiellidae. [1] Despite being animals, they indirectly perform photosynthesis, via kleptoplasty. [2]
Elysia chlorotica (common name the eastern emerald elysia) is a small-to-medium-sized species of green sea slug, a marine opisthobranch gastropod mollusc. This sea slug superficially resembles a nudibranch, yet it does not belong to that clade. Instead it is a member of the clade Sacoglossa, the sap-sucking sea slugs.
A deep-sea species of carnivorous sponge (Cladorhizidae) [6]Many Cnidarians. Sea pens. Renilla reniformis; Coral; Certain Jellyfish. Aequorea victoria; Atolla jellyfish; Helmet jellyfish
A fertilized animal later releases a gelatinous egg mass, and the eggs float freely until hatching. Their embryonic shells are lost within the first few days after hatching. The gymnosomes, like other shell-less opisthobranchs, [ a ] discard their shells at metamorphosis, with the retractor muscles being severed and the shell lost. [ 10 ]
During daytime, the Spanish dancer hides away from the light in the crevices of its natural habitat to only come out late at night. It feeds on various species of sponge. Like all nudibranchs, it is hermaphrodite and its bright red to pink egg ribbon has a spiral shape related to the size of the animal so relatively large. The Spanish Dancer ...