Charlie that youtube piece was staggering. Thank you for sending.

I pick up garbage along the beach regularly. My unscientific observation shows that

the single most prevalant item is the plastic beverage bottle and or/the tops from them.

Other chronic bits that float up:
Shoes/shoe soles
glass bottles
shampoo and deodorant containers
Household stuff like tv,s, stands for fans, larger containers for gasoline, etc.
medical waste - hypo needles & the bottles in which the meds come