Living BeingsCompare species
European Starfish
Asterias rubens
African Savanna Elephant
Loxodonta africana
How to compare two organisms
Choose two species and trace their closest shared group. Then compare a trait with the same definition on each side. Check the units, life stage and context before interpreting a measurement or range.
Missing data means that the collection lacks a sourced value. Where a characteristic does not apply to a lineage, the comparison labels it separately. Open the two profiles for context and follow their sources before drawing a conclusion.
Evidence from the profiles
Compare their characteristics
| Trait | European Starfish | African Savanna Elephant |
|---|---|---|
| Physical traits | Adults usually have five broad arms around a central disc. The upper surface is rough, and color varies. | Broad ears, a long trunk and column-like legs give the animal its familiar outline. The trunk tip has two finger-like projections. Both sexes can develop tusks. |
| Habitat and range | Rocky, sandy and mixed seabeds support this starfish, including areas with abundant bivalves. | Savannas and open woodland provide a shifting mixture of browse, grass, shade and drinking water. Seasonal water availability influences the places that herds use. |
| Diet and nutrition | Bivalves are important prey. A starfish can use tube feet to gain access and digest food with its everted stomach. | Grasses, leaves, bark and other plant material make up its diet. The trunk gathers food and moves it to the mouth. |
| Behavior and activity | Slow movement across the seabed brings individuals into contact with food and other starfish. | Female relatives and their young form long-lasting social groups. Older females hold knowledge of familiar routes and resources; adult males have a different pattern of association. |
| Reproduction and life cycle | Eggs and sperm are released into seawater. Larvae develop in the plankton before settling and changing into juveniles. | Calves are born alive and depend on milk and extended social care. Learning from other elephants is an important part of growing up. |
| Geographic distribution | The species is associated with the northeastern Atlantic and adjacent European seas. Local records are more informative than a generalized global range. | Native to sub-Saharan Africa. This account follows the savanna-elephant species concept rather than treating all African elephants as one species. |
| Ecological role | Predation can influence shellfish communities. Its reproductive investment can change with temperature and food supply. | Feeding and movement alter vegetation, and dung transfers seeds and nutrients. Habitat fragmentation and killing for ivory threaten populations. |
| Distinctive adaptations | A water-vascular system powers tube feet, and damaged arms can regenerate under suitable conditions. | Data unavailable |
| Conservation | Laboratory warming experiments reveal possible sensitivities, not a universal prediction for every wild population. No formal status is assigned here. | Data unavailable |
Classification
Shared ancestry
Closest shared taxon: Deuterostomia.