瓶鼻海豚 vs Great Hammerhead

Tursiops truncatus compared with Sphyrna mokarran

Key Differences

• 瓶鼻海豚 is Least Concern while Great Hammerhead is Critically Endangered.
• 瓶鼻海豚 lives longer (45 years vs 40 years).

Taxonomic Classification

Rank	瓶鼻海豚	Great Hammerhead
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	Mammalia (哺乳動物)	Chondrichthyes (软骨鱼纲)
Order	Cetacea (Whales & Dolphins)	Carcharhiniformes (真鲨目)
Family	Delphinidae (Oceanic Dolphins)	Sphyrnidae (Hammerhead Sharks)
Genus	Tursiops (Bottlenose Dolphins)	Sphyrna (Hammerhead Sharks)
Species	Tursiops truncatus	Sphyrna mokarran

Evolutionary Relationship

瓶鼻海豚 and Great Hammerhead share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

瓶鼻海豚

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Great Hammerhead

CR — Critically Endangered

Trend: Decreasing ↓

Physical Characteristics

Attribute	瓶鼻海豚	Great Hammerhead
Diet	Carnivore	Carnivore
Average Lifespan	45 years	40 years
Average Length	3.0 m	5.0 m
Average Weight	300.0 kg	450.0 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).

Great Hammerhead

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types spanning the Indomalayan and Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Taiwan, and Venezuela. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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。

Great Hammerhead

大双髻鲨是最大的双髻鲨物种，体长可达6米，分布于全球热带和亚热带沿海水域。其独特的T形头部（头翼）大幅增加了感觉表面积以用于电场感应，使其能以卓越精度探测藏在沙中的魟鱼——魟鱼是其首选猎物。由于鱼翅价值高昂以及混捕死亡，种群急剧减少，被列为极度濒危物种。

Shared Countries

Both species can be found in 3 countries:

🇨🇴 Colombia 🇹🇼 Taiwan 🇻🇪 Venezuela