Hector’s Beaked Whale vs Lesser Siren

Mesoplodon hectori compared with Siren intermedia

Key Differences

• Hector’s Beaked Whale is Data Deficient while Lesser Siren is Least Concern.

Taxonomic Classification

Rank	Hector’s Beaked Whale	Lesser Siren
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Cetacea (Whales & Dolphins)	Caudata (Caudata)
Family	Hyperoodontidae	Sirenidae
Genus	Mesoplodon	Siren
Species	Mesoplodon hectori	Siren intermedia

Evolutionary Relationship

Hector’s Beaked Whale and Lesser Siren share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Hector’s Beaked Whale

DD — Data Deficient

Lesser Siren

LC — Least Concern

Physical Characteristics

Attribute	Hector’s Beaked Whale	Lesser Siren
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hector’s Beaked Whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Lesser Siren

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Distributed across Belgium and Mexico.