Basking shark vs brittlestar

Rhincodon typus compared with Amphiura chiajei

Key Differences

Basking shark is Endangered while brittlestar is Least Concern.

Taxonomic Classification

Rank	Basking shark	brittlestar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Echinodermata (Echinoderms)
Class	Chondrichthyes (Cartilaginous Fish)	Ophiuroidea (Ophiuroidea)
Order	Lamniformes (Mackerel Sharks)	Amphilepidida (Amphilepidida)
Family	Rhincodontidae (Whale Sharks)	Amphiuridae
Genus	Rhincodon (Whale Sharks)	Amphiura
Species	Rhincodon typus	Amphiura chiajei

Evolutionary Relationship

Basking shark and brittlestar share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Basking shark

EN — Endangered

Trend: Decreasing ↓

brittlestar

LC — Least Concern

Physical Characteristics

Attribute	Basking shark	brittlestar
Diet	Omnivore	—
Average Lifespan	100 years	—
Average Length	12.0 m	—
Average Weight	20.0 t	—

Habitat & Geographic Range

Basking shark

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate grasslands and steppes, and montane grasslands and shrublands, among 5 distinct biome types within the Neotropic biogeographic realm.

Range

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

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

Basking shark

The world's largest fish, whale sharks can exceed 12 meters and 20 tonnes, inhabiting tropical and warm temperate oceans worldwide. Despite their massive size, they are harmless filter feeders, consuming plankton, fish eggs, and small fish by swimming open-mouthed through prey-dense water. They undertake vast seasonal migrations following plankton blooms. Endangered due to fishing, boat strikes, and the live fin trade, with population declining by approximately 50% over the past 75 years.

brittlestar

The Brittlestar (Amphiura chiajei) is a species in the genus Amphiura. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.