vs koala

Cocconeis scutellum compared with Phascolarctos cinereus

Key Differences

is Not Evaluated while koala is Vulnerable.

Taxonomic Classification

Rank		koala
Kingdom	Chromista (크로미스타)	Animalia (동물)
Phylum	Ochrophyta (대롱편모조식물)	Chordata (척삭동물)
Class	Bacillariophyceae (원시배선규조류)	Mammalia (포유류)
Order	Achnanthales (Achnanthales)	Diprotodontia (캥거루목)
Family	Cocconeidaceae	Phascolarctidae (Koalas)
Genus	Cocconeis	Phascolarctos (Koalas)
Species	Cocconeis scutellum	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 Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, Portugal, Sweden, and Taiwan.

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 scutellum is a marine and brackish-water diatom in the family Cocconeidaceae, one of the most commonly encountered epiphytic diatoms in coastal ecosystems worldwide. The frustule is broadly oval and relatively large for the genus, with robust silica walls bearing coarse transapical striae that give the valve a distinctive, shield-like appearance—a morphology reflected in the species epithet 'scutellum,' Latin for small shield. This species is a strict epiphyte in marine environments, attaching to the surfaces of seagrasses, macroalgae such as Ulva and Zostera, coralline algae, and other benthic substrates in shallow intertidal and subtidal zones. Cocconeis scutellum has been documented from coastal habitats across the Atlantic, Pacific, and Indian Oceans, with records from temperate and tropical regions including South America, Europe, and the Indo-Pacific, reflecting its cosmopolitan marine distribution. The species is a basal component of coastal food webs: dense epiphytic biofilms including C. scutellum are grazed by amphipods, gastropods, sea urchins, and small fish, transferring photosynthetically fixed carbon up the food chain. In estuarine environments where freshwater and saltwater mix, C. scutellum may co-occur with freshwater and brackish Cocconeis species, and salinity tolerance experiments indicate the species survives across a broad range of salinities. Its silicon frustules contribute to coastal sediment biosilica content upon cell death. Conservation status is not formally evaluated.

koala

호주 동부와 동남부의 상징적인 유대류로, 체중이 최대 15kg이며 저칼로리인 유칼립투스 잎 식단에서 에너지를 절약하기 위해 하루 최대 22시간을 잠으로 보낸다. 대부분의 다른 포유류를 죽일 수 있는 유독한 유칼립투스 성분을 처리하도록 고도로 특화되어, 해독에 특별히 적응된 장내 미생물총을 지닌다. 2022년 기후 변화, 서식지 개발, 클라미디아 감염으로 인한 개체수 감소로 위기종으로 지정되었다.