Fly Agaric vs Great Hammerhead

Amanita muscaria compared with Sphyrna mokarran

Key Differences

Fly Agaric is Least Concern while Great Hammerhead is Critically Endangered.
Fly Agaric is decomposer while Great Hammerhead is carnivore.
Great Hammerhead is 4500.0x heavier than Fly Agaric.
Great Hammerhead lives longer (40 years vs 1 years).

Taxonomic Classification

Rank	Fly Agaric	Great Hammerhead
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Agaricomycetes (Mushrooms)	Chondrichthyes (Cartilaginous Fish)
Order	Agaricales (Gilled Mushrooms)	Carcharhiniformes (Ground Sharks)
Family	Agaricaceae (Agarics)	Sphyrnidae (Hammerhead Sharks)
Genus	Amanita (Amanitas)	Sphyrna (Hammerhead Sharks)
Species	Amanita muscaria	Sphyrna mokarran

Conservation Status

Fly Agaric

LC — Least Concern

Trend: Stable →

Great Hammerhead

CR — Critically Endangered

Trend: Decreasing ↓

Physical Characteristics

Attribute	Fly Agaric	Great Hammerhead
Diet	Decomposer	Carnivore
Average Lifespan	1 years	40 years
Average Length	20 cm	5.0 m
Average Weight	100 g	450.0 kg

Habitat & Geographic Range

Fly Agaric

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), Oceania and the Pacific (New Zealand), and South America (Brazil, Chile, Colombia).

Great Hammerhead

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types spanning the Indomalayan and Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Taiwan, and Venezuela. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Fly Agaric

Among the most iconic and recognizable fungi on Earth, fly agaric mushrooms display striking red caps with white flecked warts across boreal forests of the Northern Hemisphere. Despite their fairy-tale appearance, they contain potent psychoactive compounds including muscimol and ibotenic acid and are moderately toxic. They form critical mycorrhizal symbioses with birch, pine, and spruce trees, exchanging mineral nutrients for carbon and playing essential roles in boreal forest nutrient cycling.

Great Hammerhead

The largest hammerhead shark species, great hammerheads reach up to 6 meters and are found in tropical and subtropical coastal waters worldwide. Their distinctive T-shaped head (cephalofoil) dramatically increases sensory surface area for electroreception, enabling them to detect buried stingrays through sand with exceptional precision — stingrays are a preferred prey. Critically Endangered, with populations declining dramatically due to highly valued fins and bycatch mortality.