Okay, not ocean related...but the problem of pollution is everywhere.
From San Marcos Mercury: Video: River scavenger looks for lost treasure
ROBERT SCHMID, who manages the Texas Parks & Wildlife fish
hatchery in San Marcos, is a serial scavenger, constantly scouring the
river for lost treasure and trash. His haul includes 1,300 flip flops
recovered during a single summer, a world globe, a bumper from a Ford
Mustang and hundreds and hundreds of water bottles, fishing bobbers and
tennis balls. He fashions “primitive” folk art from his findings as
visual anti-littering messages.