I was recently told that many of the clothes we wear are made up of materials that are dangerous to marine wildlife, and the undersea environment. I'm curious as to whether or not it's true.
I know marine animals perish from getting entangled in man-made things like nets, scuba diving gear, traps, remnants of broken boats. Sea animals can choke on man-made objects in the water that look like food but aren't. Fish which have had hooks in their mouths can suffer permanent damage, or death, even if the hooks are no longer there. Other man-made dangers exist, but I haven't heard of this one.
The question is not about the clothing items, meaning the risk of getting tangled up or eating them. It's about materials used to make the clothes.
If this does happen, which materials are they, and how do they cause the damage to wildlife and the undersea environment?
I'm in the United States. I'd be very interested to hear if this is a worldwide problem, but if that's too broad, the answers can include any number of areas as long as The United States is one of them.