This is a "no" purely for optics; it would be perfectly safe.

Citation needed.

There's approximately 1.4 * 10^21 kg of water in the ocean. There's about 2.3 * 10^6 kg of waste per year. 10^-15 is a really small number.

(Hell, seawater is already ~3.3 * 10^-9 uranium.)

	▲	triceratops 2 days ago \| parent [-]
		Why is heavy metal concentration such a problem in fish right now?