Schwarzer Tiefwasserkatzenhai vs Gemeine Kugelschnecke

Apristurus melanoasper compared with Akera bullata

Taxonomic Classification

Rank	Schwarzer Tiefwasserkatzenhai	Gemeine Kugelschnecke
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Chordata (Chordatiere)	Mollusca (Weichtiere)
Class	Chondrichthyes (Knorpelfische)	Gastropoda (Schnecken)
Order	Carcharhiniformes (Grundhaie)	Aplysiida (Aplysiida)
Family	Scyliorhinidae	Akeridae
Genus	Apristurus	Akera
Species	Apristurus melanoasper	Akera bullata

Evolutionary Relationship

Schwarzer Tiefwasserkatzenhai and Gemeine Kugelschnecke share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Schwarzer Tiefwasserkatzenhai

LC — Least Concern

Gemeine Kugelschnecke

LC — Least Concern

Physical Characteristics

Attribute	Schwarzer Tiefwasserkatzenhai	Gemeine Kugelschnecke
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Schwarzer Tiefwasserkatzenhai

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Gemeine Kugelschnecke

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Schwarzer Tiefwasserkatzenhai

The Black roughscale catshark (Apristurus melanoasper) is a species in the genus Apristurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Gemeine Kugelschnecke

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.