Coalman vs Oso Polar

Tricholoma portentosum compared with Ursus maritimus

Key Differences

Coalman is Data Deficient while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Coalman	Oso Polar
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (cordados)
Class	Agaricomycetes (Mushrooms)	Mammalia (mamíferos)
Order	Agaricales (Gilled Mushrooms)	Carnivora (carnívoros)
Family	Tricholomataceae	Ursidae (Bears)
Genus	Tricholoma	Ursus (Bears)
Species	Tricholoma portentosum	Ursus maritimus

Conservation Status

Coalman

DD — Data Deficient

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Coalman

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Found across Europe (5 countries) and North America (United States).

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.

Coalman

Tricholoma portentosum, commonly called the coalman or soapy knight, is a large, prized edible mushroom in the family Tricholomataceae forming ectomycorrhizal associations with conifers, especially pines and spruces, across temperate forests of Europe and North America. The fruiting body features a grey to blackish fibrous cap 6–12 centimeters in diameter with a wavy, often undulating margin, white to pale yellow gills with a slightly soapy odour, and a white stem with grey streaks. It typically fruits in autumn in pine forests and mixed coniferous-deciduous woodland, where its underground mycorrhizal network supports tree health and nutrient uptake. Tricholoma portentosum is considered a fine edible species in several European countries, particularly in Spain, Poland, and Italy, where it is collected commercially and sold in markets. The genus Tricholoma contains numerous similar grey or silvery species, making field identification challenging and requiring careful attention to habitat, odour, and microscopic features. The species is classified as Data Deficient by the IUCN, reflecting insufficient baseline population data to determine whether it is declining. Broader declines in fruiting body abundance of ectomycorrhizal fungi across Europe have been documented through long-term monitoring, attributed primarily to atmospheric nitrogen deposition altering forest nitrogen dynamics.

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.