Atlantic Humpbacked Dolphin vs Basking shark

Sousa teuszii compared with Rhincodon typus

Key Differences

Atlantic Humpbacked Dolphin is Critically Endangered while Basking shark is Endangered.

Taxonomic Classification

Rank	Atlantic Humpbacked Dolphin	Basking shark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Cetacea (Whales & Dolphins)	Lamniformes (Mackerel Sharks)
Family	Delphinidae (Oceanic Dolphins)	Rhincodontidae (Whale Sharks)
Genus	Sousa	Rhincodon (Whale Sharks)
Species	Sousa teuszii	Rhincodon typus

Evolutionary Relationship

Atlantic Humpbacked Dolphin and Basking shark share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Atlantic Humpbacked Dolphin

CR — Critically Endangered

Basking shark

EN — Endangered

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Atlantic Humpbacked Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Atlantic Humpbacked Dolphin

The Atlantic Humpbacked Dolphin (Sousa teuszii) is a species in the genus Sousa. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.