Atlantic Bluefin Tuna vs Bely Medved

Thunnus thynnus compared with Ursus maritimus

Key Differences

Atlantic Bluefin Tuna is Least Concern while Bely Medved is Vulnerable.
Bely Medved is 1.8x heavier than Atlantic Bluefin Tuna.
Atlantic Bluefin Tuna lives longer (40 years vs 25 years).

Taxonomic Classification

Rank	Atlantic Bluefin Tuna	Bely Medved
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class	Actinopterygii (Ray-finned Fish)	Mammalia (млекопитающие)
Order	Perciformes (Окунеобразные)	Carnivora (хищные)
Family	Scombridae (Tunas & Mackerels)	Ursidae (Bears)
Genus	Thunnus (Tunas)	Ursus (Bears)
Species	Thunnus thynnus	Ursus maritimus

Evolutionary Relationship

Atlantic Bluefin Tuna and Bely Medved share a common ancestor at the Phylum level: Chordata. (хордовые)

Просмотреть Phylum: Chordata

Conservation Status

Atlantic Bluefin Tuna

LC — Least Concern

Trend: Increasing ↑

Bely Medved

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Atlantic Bluefin Tuna	Bely Medved
Diet	Carnivore	Carnivore
Average Lifespan	40 years	25 years
Average Length	2.5 m	2.4 m
Average Weight	250.0 kg	450.0 kg

Habitat & Geographic Range

Atlantic Bluefin Tuna

Habitat

Found across multiple habitat types including temperate coniferous forests, montane grasslands and shrublands, and Mediterranean forests and woodlands within the Palearctic biogeographic realm.

Range

Distributed across Italy, Japan, Morocco, Spain, and United States.

Bely Medved

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.

Atlantic Bluefin Tuna

The Atlantic bluefin tuna is one of the largest, fastest, and most valuable fish in the world. A single fish has sold for over $3 million.

Bely Medved

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.