brittlestar vs Seehund

Amphiura filiformis compared with Phoca vitulina

Key Differences

• brittlestar is Least Concern while Seehund is Near Threatened.

Taxonomic Classification

Rank	brittlestar	Seehund
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Echinodermata (Stachelhäuter)	Chordata (Chordatiere)
Class	Ophiuroidea (Schlangensterne)	Mammalia (Säugetiere)
Order	Amphilepidida (Amphilepidida)	Pinnipedia (Seals & Sea Lions)
Family	Amphiuridae	Phocidae (True Seals)
Genus	Amphiura	Phoca (Harbor Seals)
Species	Amphiura filiformis	Phoca vitulina

Evolutionary Relationship

brittlestar and Seehund share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

brittlestar

LC — Least Concern

Seehund

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	brittlestar	Seehund
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	1.7 m
Average Weight	—	80.0 kg

Habitat & Geographic Range

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

Seehund

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (7 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

brittlestar

The Brittlestar (Amphiura filiformis) is a species in the genus Amphiura. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Seehund

The most widely distributed pinniped, harbor seals inhabit temperate and subarctic coastal waters of both the North Atlantic and North Pacific. Adults reach up to 130 kg and spend roughly equal time at sea hunting fish, squid, and crustaceans and hauling out on beaches or rocks to rest. Their large, expressive eyes are adapted for underwater vision in low light. Harbor seals are a critical food source for orcas, sharks, and polar bears.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden