The family Lamnidae, or mackerel sharks, belongs to the order Lamniformes which, just to confuse the issue, is also more commonly known as mackerel sharks.
The Great White Shark
The family is made up of 5 species in 3 genera.
These sharks are warm bodied and can maintain a constant body temperature
even in cold water. They are among the fastest swimmers in the ocean,
though the great white is slower due to its sheer size.
Unlike many shark families where many members hardly resemble each other at all, the mako, the porbeagle and the great white can be difficult to tell apart at first glance. The relationship between the anal fin and the second dorsal fin will help with your identification.
In the great white the 2nd dorsal fin sits quite far in front of the anal fin, in the porbeagle it is almost directly above it, and in the mako the 2nd dorsal sits only slightly ahead of the anal fin.