arrow worm vs Oso Polar

Parasagitta elegans compared with Ursus maritimus

Key Differences

arrow worm is Not Evaluated while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	arrow worm	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chaetognatha (gusanos flecha)	Chordata (cordados)
Class	Sagittoidea (Sagittoidea)	Mammalia (mamíferos)
Order	Aphragmophora (Aphragmophora)	Carnivora (carnívoros)
Family	Sagittidae	Ursidae (Bears)
Genus	Parasagitta	Ursus (Bears)
Species	Parasagitta elegans	Ursus maritimus

Evolutionary Relationship

arrow worm and Oso Polar share a common ancestor at the Kingdom level: Animalia. (Animals)

Vista Kingdom: Animalia

Conservation Status

arrow worm

NE — Not Evaluated

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	arrow worm	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

arrow worm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark and Norway.

Oso Polar

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

arrow worm

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

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.