Foca de Casco vs Thin Nut Truffle

Cystophora cristata compared with Hymenogaster tener

Key Differences

• Foca de Casco is Endangered while Thin Nut Truffle is Data Deficient.

Taxonomic Classification

Rank	Foca de Casco	Thin Nut Truffle
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (cordados)	Basidiomycota (Club Fungi)
Class	Mammalia (mamíferos)	Agaricomycetes (Mushrooms)
Order	Pinnipedia (Seals & Sea Lions)	Agaricales (Gilled Mushrooms)
Family	Phocidae (True Seals)	Hymenogastraceae
Genus	Cystophora	Hymenogaster
Species	Cystophora cristata	Hymenogaster tener

Conservation Status

Foca de Casco

EN — Endangered

Thin Nut Truffle

DD — Data Deficient

Physical Characteristics

Attribute	Foca de Casco	Thin Nut Truffle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Foca de Casco

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Denmark, Norway, and Portugal. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Thin Nut Truffle

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇳🇴 Norway