Common Seal vs Red-Head Pondweed

Phoca vitulina compared with Potamogeton richardsonii

Key Differences

Common Seal is Near Threatened while Red-Head Pondweed is Least Concern.

Taxonomic Classification

Rank	Common Seal	Red-Head Pondweed
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Liliopsida (Monocots)
Order	Pinnipedia (Seals & Sea Lions)	Alismatales (Alismatales)
Family	Phocidae (True Seals)	Potamogetonaceae
Genus	Phoca (Harbor Seals)	Potamogeton
Species	Phoca vitulina	Potamogeton richardsonii

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Red-Head Pondweed

LC — Least Concern

Physical Characteristics

Attribute	Common Seal	Red-Head Pondweed
Diet	Carnivore	—
Average Lifespan	30 years	—
Average Length	1.7 m	—
Average Weight	80.0 kg	—

Habitat & Geographic Range

Common Seal

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.

Red-Head Pondweed

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Distributed across Canada, Norway, and United States.

Common Seal

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.