Blackish skate vs common bubble snail

Rajella nigerrima compared with Akera bullata

Taxonomic Classification

Rank	Blackish skate	common bubble snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Elasmobranchii	Gastropoda (Gastropoda)
Order	Rajiformes (Rajiformes)	Aplysiida (Aplysiida)
Family	Rajidae	Akeridae
Genus	Rajella	Akera
Species	Rajella nigerrima	Akera bullata

Evolutionary Relationship

Blackish skate and common bubble snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Blackish skate

LC — Least Concern

common bubble snail

LC — Least Concern

Physical Characteristics

Attribute	Blackish skate	common bubble snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blackish skate

Habitat

Native to South America, inhabiting ecosystems characteristic of the region.

Range

Found in Chile.

common bubble snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Blackish skate

The Blackish skate (Rajella nigerrima) is a species in the genus Rajella. It is currently classified as Least Concern on the IUCN Red List. Native to South America, inhabiting ecosystems characteristic of the region.

common bubble snail

The common bubble snail (<em>Akera bullata</em>) is a marine gastropod mollusc found in the coastal waters of Denmark, Norway, Portugal, and Sweden. This species typically inhabits terrestrial and aquatic environments including forests and freshwater-adjacent marine areas, often occurring in shallow subtidal and intertidal zones of temperate European seas. It is classified as Least Concern on the IUCN Red List. As a member of the family Akeridae, the common bubble snail is characterized by its thin, fragile shell and its ability to swim briefly by flapping its large, wing-like parapodia. The species often forages on algae and detritus in sandy and muddy seafloor habitats, particularly in sheltered bays and estuaries. The common bubble snail typically aggregates in large numbers during the spawning season, producing gelatinous egg masses. Biological traits of this species remain poorly documented in the scientific literature.