arrow worm vs common bottlenose dolphin

Parasagitta elegans compared with Tursiops truncatus

Key Differences

• arrow worm is Not Evaluated while common bottlenose dolphin is Least Concern.

Taxonomic Classification

Rank	arrow worm	common bottlenose dolphin
Kingdom same	Animalia (động vật)	Animalia (động vật)
Phylum	Chaetognatha (arrow worms)	Chordata (động vật có dây sống)
Class	Sagittoidea (Sagittoidea)	Mammalia (lớp Thú)
Order	Aphragmophora (Aphragmophora)	Cetacea (Whales & Dolphins)
Family	Sagittidae	Delphinidae (Oceanic Dolphins)
Genus	Parasagitta	Tursiops (Bottlenose Dolphins)
Species	Parasagitta elegans	Tursiops truncatus

Evolutionary Relationship

arrow worm and common bottlenose dolphin share a common ancestor at the Kingdom level: Animalia. (động vật)

Conservation Status

arrow worm

NE — Not Evaluated

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	arrow worm	common bottlenose dolphin
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.

common bottlenose dolphin

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.

common bottlenose dolphin

The most studied and recognized dolphin species, bottlenose dolphins inhabit warm and temperate oceans worldwide, from coastal shallows to the open sea. Highly intelligent with large brains relative to body size, they demonstrate self-recognition, complex communication, and social learning. They live in fluid fission-fusion societies and cooperate to herd fish. A keystone indicator species for marine ecosystem health.

Shared Countries

Both species can be found in 2 countries:

🇩🇰 Denmark 🇳🇴 Norway