Lamna

Lamna is a genus of mackerel sharks in the family Lamnidae, containing two extant species.

Endothermy

The two species of this genus can keep their blood temperature higher above that of the water surrounding them than other cartilaginous fish, with temperature differences recorded up to 15.6 °C. Among fish, blood temperature regulation only occurs in large, fast species – bluefin tuna and swordfish are bony fish with similar abilities.

Species

The genus contains two species: Porbeagle, Lamna nasus (Bonnaterre, 1788)
Occurs in Atlantic and Southern Pacific coastal areas and open waters.
Salmon shark, Lamna ditropis (Hubbs & Follett, 1947)
Occurs near Northern Pacific coasts.

Translation

The word "Lamna" occurs as such in the following languages: English, French, Italian.

Translation(s) in other languages: German: Heringshaie, Chinese: 鼠鲨属.