At current rates, it is thought there will be more plastic than fish in the ocean by 2050. Addressing the problem of plastic pollution in the oceans requires two things: stopping more plastic from entering the ocean and removing the pollution that is already there.
Recent inventions to reduce plastic in our oceans include the making of huge artificial coastlines that catches plastic but allows marine life to swim underneath and sea bins which are like giant floating rubbish bins.
Come up with your own ideas by designing an inventive method or machine to tackle the plastic problem in the ocean. This could prevent plastic from entering rivers and oceans or remove the plastic waste that is already there. To give you some ideas, first, try removing pieces of plastic from a washing up bowl or sink without using your hands.
Draw your ideas on a poster with your notes written alongside. Share your designs using the hashtag #ConnectingClassrooms and we'll retweet the best ones.
Find out more about this subject by reading our Life Below Water classroom resource.