Bladder-nut vs Common Seal

Diospyros whyteana compared with Phoca vitulina

Key Differences

• Bladder-nut is Least Concern while Common Seal is Near Threatened.

Taxonomic Classification

Rank	Bladder-nut	Common Seal
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Chordata (脊索動物)
Class	Magnoliopsida (モクレン綱)	Mammalia (哺乳類)
Order	Ericales (ツツジ目)	Pinnipedia (Seals & Sea Lions)
Family	Ebenaceae	Phocidae (True Seals)
Genus	Diospyros	Phoca (Harbor Seals)
Species	Diospyros whyteana	Phoca vitulina

Conservation Status

Bladder-nut

LC — Least Concern

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Bladder-nut	Common Seal
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	1.7 m
Average Weight	—	80.0 kg

Habitat & Geographic Range

Bladder-nut

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.

Bladder-nut

The Bladder-nut (Diospyros whyteana) is a species in the genus Diospyros. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Common Seal

最も広く分布する鰭脚類であるゴマフアザラシの近縁種・ゼニガタアザラシ（Phoca vitulina）は、北大西洋と北太平洋の温帯・亜北極沿岸に生息する。成体は最大130kgに達し、海での魚・イカ・甲殻類の捕食と海岸や岩場での休息にほぼ同じ時間を費やす。大きく表情豊かな目は低照度での水中視覚に適応している。シャチ・サメ・ホッキョクグマにとって重要な食料源である。