Hase iruka vs Common Chickweed

Delphinus delphis compared with Cerastium fontanum

Taxonomic Classification

Rank	Hase iruka	Common Chickweed
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Mammalia (哺乳類)	Magnoliopsida (モクレン綱)
Order	Cetacea (Whales & Dolphins)	Caryophyllales (ナデシコ目)
Family	Delphinidae (Oceanic Dolphins)	Caryophyllaceae
Genus	Delphinus	Cerastium
Species	Delphinus delphis	Cerastium fontanum

Conservation Status

Hase iruka

LC — Least Concern

Common Chickweed

LC — Least Concern

Physical Characteristics

Attribute	Hase iruka	Common Chickweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hase iruka

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Common Chickweed

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Neotropic biogeographic realm.

Range

Widely distributed across Africa (South Africa), Europe (5 countries), North America (Canada, Jamaica, United States), and South America (4 countries).

Hase iruka

マイルカ（Delphinus delphis）は大西洋・地中海・インド太平洋の温帯〜熱帯海域に広く分布するイルカで、黒・白・黄色のクロスパターンが特徴的な模様を持つ。IUCNレッドリストでは軽度懸念（LC）に分類されており、世界で最も個体数の多いイルカの一種と考えられている。高速遊泳能力を持ちボウライドを楽しむ行動でよく知られ、数百頭からなる大きな群れを形成することがある。

<em>Cerastium fontanum</em>, commonly known as common chickweed, is a plant species found across Africa, Europe, and the Americas. It typically thrives in tropical and subtropical forest environments, as well as in disturbed habitats such as roadsides, gardens, lawns, and cultivated fields across a broad climatic range. The species is classified as Least Concern on the IUCN Red List, reflecting its cosmopolitan distribution and stable population status. Common chickweed belongs to the genus <em>Cerastium</em> within the family Caryophyllaceae. It is a low-growing, mat-forming herbaceous plant that typically produces small white flowers with deeply notched petals and is often found in moist, disturbed soils where it can establish rapidly. The species is a common garden weed in many parts of the world and is known for its ability to colonize a wide variety of substrates and environmental conditions. Biological traits such as average lifespan, plant height, and mass of this species remain poorly documented in the scientific literature. Its widespread occurrence and weedy habit contribute to its globally secure conservation status.