The scalloped bonnethead (Sphyrna corona) is a rare, little-known species of hammerhead shark in the family Sphyrnidae.

[1] It is found in tropical and subtropical waters in the eastern Pacific Ocean, from Mexico to Peru, and possibly as far north as the Gulf of California.

[3] It frequents inshore habitats over soft bottoms (mud, sand, and gravel) to a depth of 100 m, and also enters mangroves and estuaries.

[5] Its mallet-shaped head, called a cephalofoil, is moderately wide (24–29% of total length) and elongated lengthwise.

The similar scoophead (S. media) can be distinguished by a shorter snout, a broader mouth, and a deeply concave anal fin margin.