Spear-fishing has been around for thousands of years. Modern day spearfishing uses spearguns and slings, or compressed gas powered spear guns. Spearfishing can be done using free-diving, snorkeling, or scuba diving. Spear fishing while scuba diving is illegal in some countries. Check with your local rules and regulations for spearfishing. Spearfishing utilizes ordinary spears or specialized spears like tridents. The spears can look very similar to gigs used for gigging and can even be used for gigging. Traditional spear fishing occurs in shallow waters, but the spear gun allows for deep water fishing. Shore diving is one of the most common forms of spear fishing which are usually at depths of 16-82 ft. The shore can drop off from 16-131 ft. Sharks can be abundant in these locations. Boat diving is another way to access spearfishing. Spear fishing can be either saltwater or freshwater. Spearfishing does not require diving, however. Much like bowfishing, spearfishing can be on a boat or on a shoreline. The fisher must account for the optical illusion (refraction) of where the fish appears versus where it actually lies. Common equipment include: speargun, polespear, hawaiian slings, wet suits, weight belt or weight vest, fins, knives, kill spike, buoy or float, floatline, gloves, fish stringer, snorkel, and diving mask.