Isn't it because the light doesn't reflect back into your eyes, but from another direction so you can clearly see the fish?
(:
It looks like you're asking about spear fishing (the sport), not spear phishing (the cyber attack). In spear fishing (the sport), the common equipment includes: Spear gun or pole spear – to catch fish Wetsuit – for thermal protection Mask and snorkel – for underwater visibility and breathing Fins – for efficient swimming Weight belt – to help with buoyancy control Dive knife – for safety and utility Gloves and booties – for protection
They also used it for fishing
Spear fishing is done with a spear & regular is done with a rod/reel w/ fishing line & you catch the fish on a hook with bait.
Could be a gigging pole, or gig for short. A gigging pole can have several prongs and is used mainly for river fishing and frogging.
they used the spear to hunt animals
If it's legal, a spear gun can be used.
Harpoon or just spear A Harpoon. here in Missouri we call them gigs. this is freshwater fishing tho. we also don't call it fishing when using a gig, we call it gigging, or going gigging as apposed to fishing or going fishing. also works great on frogs.
Because he was fishing with his fishing spear
A good fisher would not throw his spear at a fish because they have a chance of 1. Losing the fish and the spear when throwing the spear, 2. Good fisherman wait until they have the best chance to hit the fish, and 3. A good fisherman would never throw their spear unless if they could not hit the fish with the spear in their hands.
a harpoon
They would have probably gone spear fishing, either with a spear or a branch which they would have sharpened with a knife.
water bends in light because of refraction which causes fish to seem a little off than where they appear to be. Because of this fisherman need to know where to position their hooks when they can see fish