arrow worm vs 瓶鼻海豚

Parasagitta elegans compared with Tursiops truncatus

Key Differences

• arrow worm is Not Evaluated while 瓶鼻海豚 is Least Concern.

Taxonomic Classification

Rank	arrow worm	瓶鼻海豚
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chaetognatha (毛颚动物门)	Chordata (脊索动物门)
Class	Sagittoidea (箭虫纲)	Mammalia (哺乳動物)
Order	Aphragmophora (无横肌目)	Cetacea (Whales & Dolphins)
Family	Sagittidae	Delphinidae (Oceanic Dolphins)
Genus	Parasagitta	Tursiops (Bottlenose Dolphins)
Species	Parasagitta elegans	Tursiops truncatus

Evolutionary Relationship

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

Conservation Status

arrow worm

NE — Not Evaluated

瓶鼻海豚

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	arrow worm	瓶鼻海豚
Diet	—	Carnivore
Average Lifespan	—	45 years
Average Length	—	3.0 m
Average Weight	—	300.0 kg

Habitat & Geographic Range

arrow worm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark and Norway.

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).

arrow worm

The Arrow worm, Parasagitta elegans, is a species. Native to Europe, inhabiting ecosystems characteristic of the region.

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。

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇳🇴 Norway