Basking shark vs Afalina

Rhincodon typus compared with Tursiops truncatus

Key Differences

• Basking shark is Endangered while Afalina is Least Concern.
• Basking shark is omnivore while Afalina is carnivore.
• Basking shark is 66.7x heavier than Afalina.
• Basking shark lives longer (100 years vs 45 years).

Taxonomic Classification

Rank	Basking shark	Afalina
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class	Chondrichthyes (Kıkırdaklı balıklar)	Mammalia (memeliler)
Order	Lamniformes (Dik burunlular)	Cetacea (Whales & Dolphins)
Family	Rhincodontidae (Whale Sharks)	Delphinidae (Oceanic Dolphins)
Genus	Rhincodon (Whale Sharks)	Tursiops (Bottlenose Dolphins)
Species	Rhincodon typus	Tursiops truncatus

Evolutionary Relationship

Basking shark and Afalina share a common ancestor at the Phylum level: Chordata. (Kordalılar)

Conservation Status

Basking shark

EN — Endangered

Trend: Decreasing ↓

Afalina

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Physical Characteristics

Attribute	Basking shark	Afalina
Diet	Omnivore	Carnivore
Average Lifespan	100 years	45 years
Average Length	12.0 m	3.0 m
Average Weight	20.0 t	300.0 kg

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.

Afalina

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).

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.

Afalina

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.

Shared Countries

Both species can be found in 3 countries:

🇵🇹 Portugal 🇹🇼 Taiwan 🇻🇪 Venezuela