Saturday, 17 March 2012
people have dumped thousands of waste such as rubbish,
chemicals & sewage in the universe's oceans, since ages ago
tides carry the waste away out of sight but
it still harms marine creatures
fish need clean water full of oxygen to breathe
raw sewage looks & smell horrible when it washes back on to
beaches. it also contains harmful bacteria that cause disease
plus disgusting virus!
rubbish often sinks to the sea bed, where ocean creatures can be
tangled. it also washes up on beaches, where it harm birds & animals
cruise ships produce 5000 litres of sewage & 30,000 litres of waste
water a day. legally, raw sewage can be dumped in the sea if the cruise
ships is more than 19 km from land
millions of litres of sewage are emptied into the ocean each year.
some of it is treated but a lot is raw!
coastal waters can be harmed by fertilizers, sewage,
chemicals emptied into the sea. extra nutrients caused by sewage
& fertilizers can increase bacteria growth. this uses up all the
oxygen in the water, so the fish surely die..
credits: my first ocean life encyclopedia, yahoo, google, flickr & various data
