A speargun is an underwater fishing implement designed to fire a spear at fish.

Spear gun
Spear gun
Spear gun
Speargun open muzzle band elevators
Influence of spear guns, dive gear and observers on estimating fish flight initiation distance on coral reefs
Unusual spinal cord injury by a speargun
Craniocerebral penetrating injury caused by a spear gun through the mouth: case report.
Craniofacial speargun injury.
Through-and-through penetrating spear gun injury of the head: case report
Penetrating Brain Injury after Suicide Attempt with Speargun: Case Study and Review of Literature
Fluid Bodies in the Sea: An Ethnography of Underwater Spear Gun Fishing in Palau, Micronesia
Spear gun tip assembly
Trizonal Speargun Injury Spanning Infratemporal, Transoropharyngeal and Transcervical Regions: A Case Report