If I asked you, do you fish? And you reside on planet earth... your response might be, why of course I fish. Then if I asked how……it gets interesting real quick.
Take the folks in the southern United States that fish with there hands…its called noodling. The fisherperson simply reaches into a catfish hole and hopes the catfish latches on and is hoisted to shore. In Great Britain it's called trout ticking. You slowly rub the trout's stomach, numbing it abit, and toss it ashore.
I don't know if this is legal anymore but in days of old they had "trout binning". Large rocks were slammed with a sledge hammer in a river. The force of the blow stunned the fish long enough for a fisherman to scoop them out of the river.
"Free diving" is still practiced in many places. You simply scuba dive or snorkel in the ocean with a basket and grab any shellfish you might find.
Spear fishing, bow fishing, harpoons or gigging has been around since time began. Single sharp poles evolved into pronged tridents and morphed into bows for longer shots or more power. Gigging was popular at night with torches, lanterns or flashlights for forking frogs.
Seines, trawlers, gill, trap, cast, hoop, drift, are types of nets used in the art of taking one or more fish in any myriad water conditions not to mention how the mesh screen dictated the catchable fish size from the smallest alewives to massive heavy gilled salmon.
Kite fishing took a boatless shore angler and got his lure trolled along the coast in hopes of hooking anything shore cruising. Not to popular, wasn't too effective. But it may have been fun all the same.
Fishing is and has been done with dams created to interfere with migrating fish, weirs to expose fish or concentrate them. Traps considered still very effective and widely used for lobsters and crabs with baiting.