Only some of the stormwater enters the sea directly. Most stormwater drains empty into the closest creek or river. They get the first dose of pollution. Their animals also get entangled in plastic. The concentration of pollution in creeks and rivers can be very high and is at its worst after rain. Some of the litter gets caught in reeds and along the bank.
During a flood all the litter that has collected for months or years among the reeds and along the bank will be flushed out to sea. When my creek flooded, along with litter, I counted 9 soccer and basketballs in five minutes making their way to the sea.
Some people illegally dump their rubbish and even cat bodies along the edges of creeks and rivers. Other people must then clean up their mess. Have you ever been involved in Clean Up Australia, picking up other people’s litter and junk?
Next time you are at the mouth of a river or creek and the tide is going out, have a look at how dirty the water is as it enters the sea. Does the water in the creek look browner? Can you see litter floating out to see?