vs common sea hare

Clitocybe strigosa compared with Aplysia punctata

Taxonomic Classification

Rank		common sea hare
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Mollusca (Mollusks)
Class	Agaricomycetes (Mushrooms)	Gastropoda (Gastropoda)
Order	Agaricales (Gilled Mushrooms)	Aplysiida (Aplysiida)
Family	Tricholomataceae	Aplysiidae
Genus	Clitocybe	Aplysia
Species	Clitocybe strigosa	Aplysia punctata

Conservation Status

LC — Least Concern

common sea hare

LC — Least Concern

Physical Characteristics

Attribute		common sea hare
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Norway and Sweden.

common sea hare

Habitat

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

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Clitocybe strigosa is an agaric fungus in the family Tricholomataceae found in temperate and boreal European forests. The specific epithet strigosa refers to a stiff, bristly texture suggesting the cap surface or stipe may bear fine, erect hairs or fibrils distinguishing it from smoother relatives. It inhabits woodland floors, grassy forest margins, and clearings, fruiting in autumn when moisture conditions favor fruiting body development. The general morphology follows the Clitocybe pattern: a depressed to funnel-shaped cap with decurrent gills and a central stipe, in pale to greyish-buff tones. As a saprotrophic fungus, C. strigosa decomposes leaf litter, woody debris, and soil organic matter, contributing to the carbon and nitrogen cycling that sustains forest ecosystems. The genus Clitocybe encompasses dozens of European species, many of which require careful microscopic examination and consideration of substrate, odor, and spore features for reliable identification. Documentation of less common species like C. strigosa contributes to understanding the full scope of European fungal biodiversity.

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.