00000000  53 68 61 72 6b 73 20 63  61 6e 20 75 73 65 20 68  |Sharks can use h|
00000010  65 61 72 74 62 65 61 74  73 20 74 6f 20 74 72 61  |eartbeats to tra|
00000020  63 6b 20 74 68 65 69 72  20 70 72 65 79 2e 20 53  |ck their prey. S|
00000030  68 61 72 6b 73 20 68 61  76 65 20 6e 6f 64 75 6c  |harks have nodul|
00000040  65 73 20 6f 6e 20 74 68  65 69 72 20 6e 6f 73 65  |es on their nose|
00000050  73 20 61 62 6f 75 74 20  74 68 65 20 73 69 7a 65  |s about the size|
00000060  20 6f 66 20 61 20 70 69  6d 70 6c 65 2c 20 63 61  | of a pimple, ca|
00000070  6c 6c 65 64 20 61 6d 70  75 6c 6c 61 65 20 6f 66  |lled ampullae of|
00000080  20 4c 6f 72 65 6e 7a 69  6e 69 2e 20 54 68 65 73  | Lorenzini. Thes|
00000090  65 20 6e 6f 64 75 6c 65  73 20 73 65 6e 73 65 20  |e nodules sense |
000000a0  65 6c 65 63 74 72 69 63  69 74 79 2c 20 73 6f 20  |electricity, so |
000000b0  74 68 65 20 65 6c 65 63  74 72 69 63 61 6c 20 70  |the electrical p|
000000c0  75 6c 73 65 73 20 74 68  61 74 20 63 6f 6d 65 20  |ulses that come |
000000d0  66 72 6f 6d 20 61 20 62  65 61 74 69 6e 67 20 68  |from a beating h|
000000e0  65 61 72 74 20 63 61 6e  20 61 63 74 20 6c 69 6b  |eart can act lik|
000000f0  65 20 61 20 62 65 61 63  6f 6e 20 66 6f 72 20 6e  |e a beacon for n|
00000100  65 61 72 62 79 20 73 68  61 72 6b 73 2e           |earby sharks.|

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