瓶鼻海豚 vs Common Seal

Tursiops truncatus compared with Phoca vitulina

Key Differences

• 瓶鼻海豚 is Least Concern while Common Seal is Near Threatened.
• 瓶鼻海豚 is 3.8x heavier than Common Seal.
• 瓶鼻海豚 lives longer (45 years vs 30 years).

Taxonomic Classification

Rank	瓶鼻海豚	Common Seal
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class same	Mammalia (哺乳動物)	Mammalia (哺乳動物)
Order	Cetacea (Whales & Dolphins)	Pinnipedia (Seals & Sea Lions)
Family	Delphinidae (Oceanic Dolphins)	Phocidae (True Seals)
Genus	Tursiops (Bottlenose Dolphins)	Phoca (Harbor Seals)
Species	Tursiops truncatus	Phoca vitulina

Evolutionary Relationship

瓶鼻海豚 and Common Seal share a common ancestor at the Class level: Mammalia. (哺乳動物)

Conservation Status

瓶鼻海豚

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	瓶鼻海豚	Common Seal
Diet	Carnivore	Carnivore
Average Lifespan	45 years	30 years
Average Length	3.0 m	1.7 m
Average Weight	300.0 kg	80.0 kg

Habitat & Geographic Range

瓶鼻海豚

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

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.

瓶鼻海豚

作为研究最广泛、最受认可的海豚物种，宽吻海豚栖息于全球从沿岸浅水到远洋的温暖和温带海域。高度智能，大脑相对体型较大，展示自我认知、复杂交流和社会学习。生活在流动的分裂-融合社会中，合作围捕鱼群。是海洋生态系统健康的关键指示物种。

Common Seal

分布最广的鳍足类动物港海豹（Phoca vitulina）栖居于北大西洋和北太平洋温带及亚北极沿海水域。成体体重可达130千克，在海中捕食鱼类、鱿鱼和甲壳动物，并在沙滩或礁岩上休息，两者时间大致相当。大而富有表情的眼睛适应于弱光下的水下视觉。港海豹是虎鲸、鲨鱼和北极熊的重要食物来源。

Shared Countries

Both species can be found in 6 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇦 Ukraine