vs Polar bear
Ceratium hirundinella compared with Ursus maritimus
Key Differences
- is Not Evaluated while Polar bear is Vulnerable.
Taxonomic Classification
| Rank | Polar bear | |
|---|---|---|
| Kingdom | Chromista (クロミスタ) | Animalia (動物) |
| Phylum | Myzozoa (ミゾゾア門) | Chordata (脊索動物) |
| Class | Dinophyceae (渦鞭毛藻) | Mammalia (哺乳類) |
| Order | Gonyaulacales (Gonyaulacales) | Carnivora (ネコ目) |
| Family | Ceratiaceae | Ursidae (Bears) |
| Genus | Ceratium | Ursus (Bears) |
| Species | Ceratium hirundinella | Ursus maritimus |
Conservation Status
Polar bear
VU — VulnerablePopulation: ~26.0K
Trend: Decreasing ↓
Physical Characteristics
| Attribute | Polar bear | |
|---|---|---|
| Diet | — | Carnivore |
| Average Lifespan | — | 25 years |
| Average Length | — | 2.4 m |
| Average Weight | — | 450.0 kg |
Habitat & Geographic Range
Native to Europe and North America and South America, inhabiting ecosystems characteristic of the region.
Widely distributed across Europe (Denmark, Norway, Sweden), North America (United States), and South America (Brazil, Chile).
Polar bear
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.
Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.
Ceratium hirundnellaは、ツバメのような輪郭を持つ複数の角を備えた有殻細胞を持つ独特な淡水渦鞭毛藻類だ。世界中の温帯および亜熱帯地域の湖、池、緩流水域に生息する。主に光合成を行うこの原生生物は、温暖な季節に栄養豊富な湖で密なブルームを形成することがある。
Polar bear
地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。
Related Comparisons
Nature FYI Family
Explore more of the natural world across our sister sites.
Part of the Nature FYI family — FYIPedia