Grass puffer

The grass puffer has a highly unusual breeding behavior where large groups gather seasonally in shallow water along certain beaches during high tide, throw themselves onto land (with the help of an incoming wave) where fertilization occurs, and then return to the water. The fertilized eggs may be swept back to the sea or stay on land under rocks for a period, Such a breeding behavior is not known from any other pufferfish, but is known from the unrelated capelin and grunion. ==Relationship with humans==

The grass puffer is often caught off beaches, docks, and piers using various baits such as worms, shrimp, sea lice, or cut fish. They are popular for children to catch and even popular as pets, but their intestines contain the extremely potent pufferfish poison tetrodotoxin which is potentially lethal to humans. The species is not specifically targeted, but sometimes taken as part of the fugu fishery. ==See also==