Alequim vs trinta-réis-boreal / gaivina

Carcharodon carcharias compared with Sterna hirundo

Key Differences

• Alequim is Vulnerable while trinta-réis-boreal / gaivina is Endangered.

Taxonomic Classification

Rank	Alequim	trinta-réis-boreal / gaivina
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Chondrichthyes (Cartilaginous Fish)	Aves (ave)
Order	Lamniformes (Mackerel Sharks)	Charadriiformes (Charadriiformes)
Family	Lamnidae (Mackerel Sharks)	Laridae
Genus	Carcharodon (Great White Sharks)	Sterna
Species	Carcharodon carcharias	Sterna hirundo

Evolutionary Relationship

Alequim and trinta-réis-boreal / gaivina share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Alequim

VU — Vulnerable

Population: ~3.5K

Trend: Decreasing ↓

trinta-réis-boreal / gaivina

EN — Endangered

Physical Characteristics

Attribute	Alequim	trinta-réis-boreal / gaivina
Diet	Carnivore	—
Average Lifespan	70 years	—
Average Length	5.0 m	—
Average Weight	1.1 t	—

Habitat & Geographic Range

Alequim

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate grasslands and steppes, among 9 distinct biome types spanning the Indomalayan and Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

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

trinta-réis-boreal / gaivina

Habitat

Found across multiple habitat types including tropical and subtropical dry broadleaf forests, flooded grasslands and savannas, and montane grasslands and shrublands, among 9 distinct biome types spanning the Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Europe (7 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Alequim

O tubarão-branco é o maior peixe predador da Terra, podendo atingir 6 metros de comprimento e 2.000 kg, habitando águas costeiras e oceânicas frias em todos os principais oceanos. São predadores de topo que empregam ataques de emboscada por baixo, direcionados principalmente a mamíferos marinhos, peixes de grande porte e aves marinhas. Apesar de sua terrível reputação, ataques não provocados a humanos são extremamente raros. Classificado como Vulnerável (VU), com populações em declínio devido ao corte de barbatanas, captura acidental e pesca direcionada, apesar das proteções legais vigentes em muitas jurisdições.

trinta-réis-boreal / gaivina

O trinta-réis-comum (Sterna hirundo) está classificado como Em Perigo (EN) na Lista Vermelha da IUCN. Em alto risco de extinção na natureza, com declínio populacional significativo e ameaças contínuas à sobrevivência.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇵🇹 Portugal