Living BeingsCompare species
Scalloped Hammerhead
Sphyrna lewini
Tiger
Panthera tigris
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 | Scalloped Hammerhead | Tiger |
|---|---|---|
| Nutrition | Data unavailable | Carnivorous Source ↗ |
| Social organization | Data unavailable | Generally solitary Source ↗ |
| Physical traits | The head is broad and flattened, with a curved, indented front margin. The body has a tall first dorsal fin and a pale underside. | Dark stripes break up the tiger’s outline. Stripe patterns vary from one individual to another. |
| Habitat and range | Coastal shelves, island slopes and offshore waters are used at different ages and times. | Tigers live in varied habitats, including tropical forests, mangrove swamps and temperate forest. |
| Diet and nutrition | Fish and cephalopods are important prey. Feeding changes as sharks move from coastal juvenile habitat to deeper waters. | Tigers mainly hunt large mammals, including deer and wild pigs. |
| Behavior and activity | Schooling and movements between daytime gathering sites and feeding areas are characteristic in some populations. | A tiger usually hunts by stalking its prey and attacking at close range. A tiger can communicate without meeting another tiger directly. Scratches and scent marks leave information at places another animal may visit later. In addition to stalking on land, tigers can swim well and have been observed hunting in water. |
| Reproduction and life cycle | Females give birth to live young. Shallow coastal habitats provide nursery areas for juveniles. | Young tigers stay with their mother while developing the skills needed to take prey. This prolonged period of dependence is consistent with an adult life that is generally solitary. A photograph of a female with cubs therefore describes an important life stage rather than a permanent social group. |
| Geographic distribution | The species occurs in warm seas around the world. Its presence is uneven, and local populations can be strongly depleted. | Data unavailable |
| Ecological role | These sharks are large marine predators and also host parasites and visiting cleaner fish. | Data unavailable |
| Distinctive adaptations | The expanded head spreads sensory organs across a broad surface, supporting prey detection. | Individual stripe patterns have practical value to field researchers. Paired cameras can photograph the sides of a passing tiger, and repeated images of the same pattern can identify the same animal. A sequence of detections across sampling locations can support a population estimate. |
| Conservation | Targeted fishing, bycatch and loss of nursery habitat are major pressures. Protection needs to consider more than adult aggregation sites. | Data unavailable |
Classification
Shared ancestry
Closest shared taxon: Gnathostomata.