common bubble snail vs Semele

Akera bullata compared with Hipparchia semele

Key Differences

• common bubble snail is Least Concern while Semele is Endangered.

Taxonomic Classification

Rank	common bubble snail	Semele
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (moluscos)	Arthropoda (artrópodos)
Class	Gastropoda (gastrópodos)	Insecta (insecto)
Order	Aplysiida (Aplysiida)	Lepidoptera (Butterflies & Moths)
Family	Akeridae	Nymphalidae (Brush-footed Butterflies)
Genus	Akera	Hipparchia
Species	Akera bullata	Hipparchia semele

Evolutionary Relationship

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

Conservation Status

common bubble snail

LC — Least Concern

Semele

EN — Endangered

Physical Characteristics

Attribute	common bubble snail	Semele
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

common bubble snail

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Semele

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (37 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Semele

La ninfálida gris (Hipparchia semele) está clasificada como En Peligro (EN) en la Lista Roja de la UICN. Enfrenta un alto riesgo de extinción en estado silvestre, con un significativo declive poblacional y amenazas continuas para su supervivencia.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden