The development of diverse tooth shapes among vertebrates, from sharks to mammals, is a highly conserved process, utilising a similar dental signalling centre for more than 400 million years.

The tooth shape of sharks and mice are regulated by a similar signaling center despite their teeth having very different geometries.

Habitats of satellite-tracked blue sharks were shifted surfaceward by an oxygen minimum zone (OMZ) at depth thereby increasing their susceptibility to capture by longline fishing focused above the OMZ.

The ability of cartilaginous fishes to generate new cartilage through adulthood, and to spontaneously repair damaged cartilage, could shed light on novel cell-based therapies for cartilage injury in mammals.

A shift in antero-posterior positional information may contribute to the fin-to-limb transformation.