If you want to hit fish under water using a spear should you aim below it, straight at it or above it? Explain
When aiming to hit a fish underwater using a spear, you should aim below the fish. This concept is known as "refraction," which refers to the bending of light as it passes from one medium to another (in this case, from water to air).
Due to refraction, objects underwater appear to be at a shallower depth than they actually are. Light rays coming from the fish are bent as they pass from water into air, causing the fish to be visually higher than its actual location. As a result, if you were to aim directly at the fish, your spear would likely hit above it.
To compensate for this refraction effect, you need to aim slightly below the fish. The exact aiming point will depend on the angle at which you're observing the fish and the distance between you and your target. By aiming lower than where the fish appears to be, you account for the bending of light and increase your chances of hitting the fish accurately.
It's essential to practice and gain experience while spearfishing, as estimating the correct amount of compensation will vary depending on the conditions, such as water clarity, depth, and refraction angle.