白头海雕 vs Great Hammerhead

Haliaeetus leucocephalus compared with Sphyrna mokarran

Key Differences

• 白头海雕 is Not Evaluated while Great Hammerhead is Critically Endangered.
• Great Hammerhead is 90.0x heavier than 白头海雕.
• Great Hammerhead lives longer (40 years vs 28 years).

Taxonomic Classification

Rank	白头海雕	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	Aves (鳥綱)	Chondrichthyes (软骨鱼纲)
Order	Accipitriformes (鷹形目)	Carcharhiniformes (真鲨目)
Family	Accipitridae (Hawks & Eagles)	Sphyrnidae (Hammerhead Sharks)
Genus	Haliaeetus (Sea Eagles)	Sphyrna (Hammerhead Sharks)
Species	Haliaeetus leucocephalus	Sphyrna mokarran

Evolutionary Relationship

白头海雕 and Great Hammerhead share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

白头海雕

NE — Not Evaluated

Population: ~316.7K

Trend: Increasing ↑

Great Hammerhead

CR — Critically Endangered

Trend: Decreasing ↓

Physical Characteristics

Attribute	白头海雕	Great Hammerhead
Diet	Carnivore	Carnivore
Average Lifespan	28 years	40 years
Average Length	90 cm	5.0 m
Average Weight	5.0 kg	450.0 kg

Habitat & Geographic Range

白头海雕

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 10 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (8 countries), North America (United States), and South America (Ecuador).

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.

白头海雕

白头海雕是美国国鸟，也是美国生态保护史上的成功案例，曾因滴滴涕（DDT）的广泛使用而濒临灭绝，经保护措施的实施后种群数量已显著恢复。该物种在IUCN红色名录中被评估为无危（LC），以白色头颈和尾羽与深棕色体羽形成的鲜明对比为主要识别特征。它们主要以鱼类为食，也会捕食哺乳动物和腐肉。

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。