Atlantic bob-tailed squid vs common bottlenose dolphin

Semirossia tenera compared with Tursiops truncatus

Taxonomic Classification

Rank	Atlantic bob-tailed squid	common bottlenose dolphin
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Mollusca (มอลลัสกา)	Chordata (สัตว์มีแกนสันหลัง)
Class	Cephalopoda (ชั้นเซฟาโลพอด)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Sepiida (หมึกกระดอง)	Cetacea (Whales & Dolphins)
Family	Sepiolidae	Delphinidae (Oceanic Dolphins)
Genus	Semirossia	Tursiops (Bottlenose Dolphins)
Species	Semirossia tenera	Tursiops truncatus

Evolutionary Relationship

Atlantic bob-tailed squid and common bottlenose dolphin share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Atlantic bob-tailed squid

LC — Least Concern

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	Atlantic bob-tailed squid	common bottlenose dolphin
Diet	—	Carnivore
Average Lifespan	—	45 years
Average Length	—	3.0 m
Average Weight	—	300.0 kg

Habitat & Geographic Range

Atlantic bob-tailed squid

common bottlenose dolphin

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

Atlantic bob-tailed squid

The Atlantic bob-tailed squid (Semirossia tenera) is a species in the genus Semirossia. It is currently classified as Least Concern on the IUCN Red List.

common bottlenose dolphin

The most studied and recognized dolphin species, bottlenose dolphins inhabit warm and temperate oceans worldwide, from coastal shallows to the open sea. Highly intelligent with large brains relative to body size, they demonstrate self-recognition, complex communication, and social learning. They live in fluid fission-fusion societies and cooperate to herd fish. A keystone indicator species for marine ecosystem health.