Hooded seal vs Smooth Stonewort

Cystophora cristata compared with Nitella flexilis

Key Differences

• Hooded seal is Endangered while Smooth Stonewort is Least Concern.

Taxonomic Classification

Rank	Hooded seal	Smooth Stonewort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Charophyta (Charophyta)
Class	Mammalia (Mammals)	Charophyceae (Charophyceae)
Order	Pinnipedia (Seals & Sea Lions)	Charales (Charales)
Family	Phocidae (True Seals)	Characeae
Genus	Cystophora	Nitella
Species	Cystophora cristata	Nitella flexilis

Conservation Status

Hooded seal

EN — Endangered

Smooth Stonewort

LC — Least Concern

Physical Characteristics

Attribute	Hooded seal	Smooth Stonewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hooded seal

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.

Smooth Stonewort

Habitat

Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Denmark, Norway, Sweden, and United States.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇳🇴 Norway