Question

why blood appears green when go deeper then 30 fts underwater!?​

Answer 1

blood appears green

because there is no red light

there red light cannot bounce into your eyes, green pigments in the blood.

that's why blood is green in underwear

I hope it help you ❤️

Answer 2

$\huge\boxed{\underline{\mathcal{\red{A}\green{N}\pink{S}\orange{W}\blue{E}\purple{R}}}}$

That means that at 30 feet or so, there is no red light in the water, so red light can't bounce off blood into our eyes. Instead, green is reflected by green pigments in the blood that are usually hidden by the reflected red light. If you went even deeper, the blood would change from green to black.