What is the shallow water covering?
The water is covering the sand.
    src        edge_attr  dst
0     0   to the left of    1
1     0   to the left of   14
2     0  to the right of    5
3     0   to the left of    4
4     1   to the left of   14
5     1  to the right of    7
6     1  to the right of    5
7     1  to the right of    0
8     1   to the left of    8
9     2  to the right of    7
10    2  to the right of    5
11    3         covering   17
12    4          wearing    1
13    4  to the right of    0
14    4  to the right of    5
15    4   to the left of   14
16    4               in    3
17    4   to the left of    8
18    4  to the right of    7
19    5      in front of    6
20    5   to the left of   10
21    5  to the right of   12
22    5  to the right of   13
23    5   to the left of   14
24    5   to the left of    9
25    5   to the left of    4
26    5   to the left of    1
27    5   to the left of    2
28    5   to the left of    0
29    5   to the left of   16
30    5               in    3
31    6           behind    5
32    6  to the right of   13
33    7   to the left of    4
34    7   to the left of    2
35    7  to the right of   13
36    7   to the left of    1
37    8  to the right of    4
38    8  to the right of    1
39    9  to the right of    5
40   10  to the right of    5
41   11               on   17
42   12               on   17
43   12   to the left of    5
44   13   to the left of    6
45   13   to the left of    5
46   13               on   17
47   13   to the left of    7
48   14               on   17
49   14  to the right of    4
50   14  to the right of    1
51   14  to the right of   16
52   14  to the right of    5
53   14  to the right of    0
54   16   to the left of   14
55   16  to the right of    5
56   17       covered by    3