瓶鼻海豚 vs common hydra

Tursiops truncatus compared with Hydra vulgaris

Key Differences

• 瓶鼻海豚 is Least Concern while common hydra is Not Evaluated.

Taxonomic Classification

Rank	瓶鼻海豚	common hydra
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chordata (脊索动物门)	Cnidaria (刺胞動物門)
Class	Mammalia (哺乳動物)	Hydrozoa (水螅纲)
Order	Cetacea (Whales & Dolphins)	Anthoathecata (花水母目)
Family	Delphinidae (Oceanic Dolphins)	Hydridae
Genus	Tursiops (Bottlenose Dolphins)	Hydra
Species	Tursiops truncatus	Hydra vulgaris

Evolutionary Relationship

瓶鼻海豚 and common hydra share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

瓶鼻海豚

LC — Least Concern

Population: ~600.0K

Trend: Stable →

common hydra

NE — Not Evaluated

Physical Characteristics

Attribute	瓶鼻海豚	common hydra
Diet	Carnivore	—
Average Lifespan	45 years	—
Average Length	3.0 m	—
Average Weight	300.0 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 hydra

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

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 hydra

<em>Hydra vulgaris</em>, commonly known as the common hydra, is a small freshwater cnidarian in the family Hydridae. Its conservation status has not been formally evaluated by the IUCN. The species is recorded from Denmark, Norway, and Sweden, with its native range understood to encompass Europe broadly. It typically inhabits slow-moving or still freshwater bodies such as ponds, lakes, and streams, where it attaches to aquatic vegetation or submerged substrates. The common hydra is notable for its remarkable regenerative capabilities and has been the subject of substantial biological research. Diet information for this species is not available in current records. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden