Essentials of Ecology

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1. What is the average number for each of the nine columns
   of data—unprovoked shark attacks, deaths, and non-fatal
   injuries between 1998 and 2007 for the world, the United
   States, and Florida?


2. What percentage of the world’s average annual unpro-
   voked shark attacks between 1998 and 2007 occurred in
   (a) the United States and (b) Florida?
   2. What percentage of the average annual unprovoked shark
   attacks in the United States between 1998 and 2007 oc-
   curred in Florida?

World United States Florida

Total Fatal Non-fatal Total Fatal Non-fatal Total Fatal Non-fatal

Year Attacks Attacks Attacks Attacks Attacks Attacks Attacks Attacks Attacks

1998 51 6 45 26 1 25 21 1 20

1999 56 4 52 38 0 38 26 0 26

2000 79 11 68 53 1 52 37 1 36

2001 68 4 64 50 3 47 34 1 33

2002 62 3 59 47 0 47 29 0 29

2003 57 4 53 40 1 39 30 0 30

2004 65 7 58 30 2 28 12 0 12

2005 61 4 57 40 1 39 20 1 19

2006 63 4 59 40 0 40 23 0 23

2007 71 1 70 50 0 50 32 0 32

Source: Data from International Shark Attack File, Florida Museum of Natural

History, University of Florida.