Crabeater seal vs Ruff

Lobodon carcinophaga compared with Calidris pugnax

Taxonomic Classification

Rank	Crabeater seal	Ruff
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Aves (鳥類)
Order	Pinnipedia (Seals & Sea Lions)	Charadriiformes (チドリ目)
Family	Phocidae (True Seals)	Scolopacidae
Genus	Lobodon	Calidris
Species	Lobodon carcinophaga	Calidris pugnax

Evolutionary Relationship

Crabeater seal and Ruff share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Crabeater seal

LC — Least Concern

Ruff

LC — Least Concern

Physical Characteristics

Attribute	Crabeater seal	Ruff
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Crabeater seal

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ruff

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), North America (United States), and South America (Colombia, Venezuela).

Ruff

Ruff（Calidris pugnax）は IUCN レッドリストで軽度懸念（LC）に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。