1. By the person who made this, also known as Mad
Molly

2. Introduction
In this slideshow you will hopefully find out things you never knew:
What is over fishing
What causes it
The consequences
What is bycatch
Animals in danger
What we can do

3. What causes overfishing?
PEOPLE LIKE
EATING FISH
TOO
MUCH!
Yeah I’m
watching
you!!!!!

4. What is overfishing?
•Overfishing is when so many fish are caught that the
population can't reproduce fast enough to replace them.
•Overfishing started in the early 1950’s. Since then fish
numbers have declined.
•Most of the overfishing is done by big industrial trawlers.

5. Trawlers
•Catch thousands of tons of fish
•Bottom trawling is the most destructive fishing practice in the
world as it catches many species of seafood that are not meant to
be eaten. Trawls are pulled along the seabed by boats and also
destroy the seabed and coral.
•After a trawler has cleared an area, it may take years for the
ecosystem to even partially recover.
•Undiscovered species living at the bottom of the ocean may be
wiped out.

6. Fish stocks
 The UN estimates that 70% of the world's fish
stock have been wiped out.
 Stocks might collapse by 2050

7. Animals Being Overfished
. Crabs . Hump head wrass
. Chilean sea bass . Turtles
. Eels . Dugongs / manatees
. Flatfish . Seals
. Rockfish . Salmon
. Parrotfish . Vanquita
. Surgeon fish . Southern sea otters
. Tuna, especially Blue Fin Tuna .Black atbalone
. All whales . Dolphins
. Sharks

8. •There are billions of animals caught each year as
bycatch by large trawler boats.
•In 1994 scientists estimated that between 17.9-39.5
million tonnes of marine animals were caught and
discarded as bycatch.
•Animals such as dolphins get stuck in nets, struggle
and die.
•If bycatch fish are too small they are either put back
in the ocean or made into something else e.g.
fertilizer.

9. Blue Fin Tuna
. One of the top animals in
danger is the blue finned
tuna
. Might be extinct by 2013
. It is near extinction
because :
1 People are destroying its
habitat
2 We are overfishing it
because people love to
eat it especially in sushi

10. Sharks
. Are on the brink of extinction because:
1 People still like shark fin soup
2 Overfishing is taking their main source
of food away from them
. Take the sharks away and the oceans
don’t stand a chance. They control
the populations of many fish
. Sharks are at the top of the list of
marine animals likely to become
extinct
. Shark numbers have declined by 90% in
the past 30 years

11. Shark Finning
. The sharks get captured
in a huge net
. The sharks are put on the
deck to have their fins
and tails sawn off while
they are conscious
. If they wriggle they are
left to die a slow and
painful death

12.  Depleted fish stocks
 Changes in marine food web
 Removal of species
 Destruction of habitat
 The ecosystem will crumble and the oceans will die.

13. What we can do
. Ask for MSC-certified (marine stewardship
council-certified) seafood
.Don’t eat fish
. Don’t go fishing
. Buy dolphin safe tinned tuna
. Sign any petitions against overfishing
. DON’T EAT TUNA SUSHI
.Tell others what to do
. And anything else that you might think of

14. References
Websites
http://bis.gmu.edu/system/documents/8386/original/Walter%202012%20project%20Award.pdf?1333384359
http://www.greenpeace.org/international/en/campains/oceans/overfishing/
http://www.treehugger.com/green-food/how-bad-is-overfishing-what-can-do-to-stop-it.html
http://www.ypte.org.uk/environmental/over-fishing/29#whatdone
http://www.ehow.com/facts-5796925-effect-overfishing/ecosystem.html
Magazines
Marine Conservation (2009)
Secrets of the sea (2001)
Books
Encyclopedia of Environment (1994)

15. Thank you for watching my slide
show!

16. THE END
A happy fish for now