common sea hare vs Eurasian pygmy shrew

Aplysia punctata compared with Sorex minutus

Key Differences

• common sea hare is Least Concern while Eurasian pygmy shrew is Vulnerable.

Taxonomic Classification

Rank	common sea hare	Eurasian pygmy shrew
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Mollusca (软体动物门)	Chordata (脊索动物门)
Class	Gastropoda (腹足纲)	Mammalia (哺乳動物)
Order	Aplysiida (海鹿目)	Soricomorpha (鼩形目)
Family	Aplysiidae	Soricidae
Genus	Aplysia	Sorex
Species	Aplysia punctata	Sorex minutus

Evolutionary Relationship

common sea hare and Eurasian pygmy shrew share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

common sea hare

LC — Least Concern

Eurasian pygmy shrew

VU — Vulnerable

Physical Characteristics

Attribute	common sea hare	Eurasian pygmy shrew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

common sea hare

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Eurasian pygmy shrew

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

common sea hare

<em>Aplysia punctata</em>, the common sea hare, is a large opisthobranch sea slug in the family Aplysiidae, order Aplysiida, found in the northeastern Atlantic Ocean and Mediterranean Sea, with confirmed records from Denmark, Norway, Portugal, and Sweden. This species typically inhabits shallow subtidal and intertidal zones with abundant macroalgae, feeding primarily on red and green algae — a diet that influences the color of the defensive purple ink it secretes when threatened. <em>Aplysia punctata</em> is a simultaneous hermaphrodite, capable of acting as both male and female during mating, and often forms mating chains involving multiple individuals. It can reach considerable size among European opisthobranch species, though body dimensions vary considerably with age and feeding conditions. The species is classified as Least Concern by the IUCN, reflecting stable populations across its coastal range. Biological traits for this species remain poorly documented in the scientific literature, including precise average data on lifespan, body length, weight, and detailed seasonal dietary patterns, though its general herbivorous feeding on macroalgae is well established.

Eurasian pygmy shrew

小鼩鼱（Sorex minutus）在IUCN红色名录中被列为易危（VU）物种。在野外面临高度危险风险，种群数量下降，栖息地压力不断增加。

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden