Two severed killer-whale dorsal fins washed ashore on Russia’s Bering Island in 2022, each scarred by tooth-rake marks that ...

Two torn-off killer whale dorsal fins, each scarred with deep tooth rakes made by other orcas, washed ashore on Russia’s Bering Island in 2022 and 2024. The discoveries, roughly two kilometers apart ...

SCIENTISTS spotted a rare super-healing shark that was able to recover from traumatic injury. The creature was first spotted with a torn dorsal fin in 2022 but has since been found healed in a ...

A skin resembling armor, rapid healing abilities, continuous tooth renewal and the capability for limb regeneration—this might sound like the description of a creature from a superhero film.

A silky shark with a chunk taken out of its dorsal fin regrew much of its lost appendage, according to photographs taken of the fish nearly a year apart. Research describing the elasmobranch’s ...