vs koala

Cocconeis neodiminuta compared with Phascolarctos cinereus

Key Differences

is Not Evaluated while koala is Vulnerable.

Taxonomic Classification

Rank		koala
Kingdom	Chromista (クロミスタ)	Animalia (動物)
Phylum	Ochrophyta (オクロ植物)	Chordata (脊索動物)
Class	Bacillariophyceae (クサリケイソウ綱)	Mammalia (哺乳類)
Order	Achnanthales (Achnanthales)	Diprotodontia (カンガルー目)
Family	Cocconeidaceae	Phascolarctidae (Koalas)
Genus	Cocconeis	Phascolarctos (Koalas)
Species	Cocconeis neodiminuta	Phascolarctos cinereus

Conservation Status

NE — Not Evaluated

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute		koala
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	75 cm
Average Weight	—	10.0 kg

Habitat & Geographic Range

Habitat

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

Range

Distributed across Brazil, Norway, and Sweden.

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

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

Cocconeis neodiminuta is a small, adnate diatom in the family Cocconeidaceae, distinguished from related species within the genus by its diminutive frustule size and specific silica wall ornamentation patterns resolvable by electron microscopy. As a member of the genus Cocconeis, this species is an epiphytic organism that lives attached to the surfaces of aquatic plants, filamentous algae, sediment particles, and submerged solid substrates in freshwater and occasionally brackish environments. The frustule—the intricate silica cell wall that encases the diatom cell—consists of two overlapping halves (valves) with species-specific striation patterns and pore fields (areolae) used in taxonomic identification. Cocconeis neodiminuta has been documented from freshwater environments across South America and various other regions, suggesting a broad cosmopolitan distribution consistent with many freshwater diatom taxa. The species, like other cocconeid diatoms, reproduces primarily by asexual binary fission, with periodic sexual reproduction through auxospore formation to restore cell size after successive divisions cause progressive size reduction. As a photosynthetic primary producer in benthic communities, this diatom contributes to the base of aquatic food webs and participates in the biological cycling of silicon—an element critical to diatom frustule production and removed from solution as diatoms proliferate. Its conservation status has not been evaluated by the IUCN.

koala

オーストラリア東部・南東部を代表する有袋類で、体重は最大15kgに達し、低カロリーのユーカリの葉食から得るエネルギーを節約するために1日最大22時間を睡眠に費やす。他の哺乳類の多くを死に至らしめる有毒なユーカリ成分を処理するために高度に特化しており、解毒に特別に適応した腸内微生物叢を持つ。クラミジア感染症、生息地の伐採、気候変動により個体数が激減し、2022年に絶滅危惧種に指定された。