John Fleng Steffensen

This study examines cardiac aging in Greenland sharks, finding fibrosis, lipofuscin, and oxidative damage but no physiological decline, suggesting resilience to aging.

This study quantifies escape response kinematics in Spotted Ratfish, showing faster performance than elasmobranchs but slower than teleosts, suggesting M-cells enhance escape efficiency.

This study shows the Greenland shark retains a functional visual system adapted to dim light, with intact rod-based vision genes and no retinal degeneration despite its age.

The paper presents a chromosome-level genome assembly of the Greenland shark and identifies genomic features associated with its extreme longevity.