Komodo Dragon vs St. James' shell

Varanus komodoensis compared with Pecten maximus

Key Differences

• Komodo Dragon is Endangered while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Komodo Dragon	St. James' shell
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chordata (脊索动物门)	Mollusca (软体动物门)
Class	Reptilia (爬行纲)	Bivalvia (双壳纲)
Order	Squamata (有鱗目)	Pectinida (扇贝目)
Family	Varanidae (Monitor Lizards)	Pectinidae
Genus	Varanus (Monitor Lizards)	Pecten
Species	Varanus komodoensis	Pecten maximus

Evolutionary Relationship

Komodo Dragon and St. James' shell share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Komodo Dragon

EN — Endangered

Population: ~3.5K

Trend: Stable →

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Komodo Dragon	St. James' shell
Diet	Carnivore	—
Average Lifespan	30 years	—
Average Length	2.6 m	—
Average Weight	70.0 kg	—

Habitat & Geographic Range

Komodo Dragon

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 4 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Indonesia. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

St. James' shell

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (Chile).

Komodo Dragon

科莫多巨蜥（Varanus komodoensis）是现存最大的蜥蜴，仅分布于印度尼西亚的少数岛屿。

St. James' shell

圣雅各贝（Pecten maximus）在IUCN红色名录中被列为无危（LC）。在其分布范围内广泛分布，种群数量稳定，没有直接的保护关切。