common sea hare vs European pine marten

Aplysia punctata compared with Martes martes

Key Differences

• common sea hare is Least Concern while European pine marten is Critically Endangered.

Taxonomic Classification

Rank	common sea hare	European pine marten
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Moluscos)	Chordata (cordados)
Class	Gastropoda (Gastrópodes)	Mammalia (mamíferos)
Order	Aplysiida (Aplysiida)	Carnivora (carnívoros)
Family	Aplysiidae	Mustelidae (Weasels & Otters)
Genus	Aplysia	Martes
Species	Aplysia punctata	Martes martes

Evolutionary Relationship

common sea hare and European pine marten share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

common sea hare

LC — Least Concern

European pine marten

CR — Critically Endangered

Physical Characteristics

Attribute	common sea hare	European pine marten
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.

European pine marten

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous 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 (6 countries). Currently classified as Critically Endangered 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.

European pine marten

A marta-europeia (Martes martes) está classificada como Criticamente Em Perigo (CR) na Lista Vermelha da UICN. Enfrenta risco extremamente alto de extinção no estado selvagem devido ao severo declínio populacional e à perda de habitat.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden