2
CONTENTS
The five oceans
2
EUROPE
4
Thames
6
Elbe
8
Volga, Dnieper
10
Scandinavia
12
Rhine
14
Danube
16
Low Countries
18
Seine, Loire
20
Po, Tiber
22
Tagus
24
NORTH AMERICA
26
Yukon
28
Hudson
30
Missouri, Mississippi
32
Colorado River
34
SOUTH AMERICA
36
Amazon
38
Paraná, Uruguay
40
ASIA
42
Tigris, Euphrates
44
Lena
46
Indus
48
Ganges
50
Yellow River, Yangtze
52
Mekong
54
AFRICA
56
Nile
58
Niger
60
Congo
62
OCEANIA
64
Fly
66
Murray, Darling
68
Waikato
70
Southern Ocean, Antarctica
72
Y
o
u
m
i
g
h
t
t
h
i
n
k
t
h
e
w
h
o
l
e
w
o
r
l
d
h
a
s
b
e
e
n
e
x
p
l
o
r
e
d
b
u
t
l
a
r
g
e
p
a
r
t
s
a
r
e
s
t
i
l
l
u
n
k
n
o
w
n
t
e
r
r
i
t
o
r
y
.
I
n
t
h
e
d
e
p
t
h
s
o
f
t
h
e
s
e
a
l
i
v
e
h
u
n
d
r
e
d
s
o
f
t
h
o
u
s
a
n
d
s
o
f
c
r
e
a
t
u
r
e
s
w
e
h
a
v
e
n
’
t
y
e
t
e
n
c
o
u
n
t
e
r
e
d
.
T
h
e
G
u
l
f
S
t
r
e
a
m
i
s
a
w
a
r
m
,
p
o
w
e
r
f
u
l
a
n
d
f
a
s
t
c
u
r
r
e
n
t
t
h
a
t
fl
o
w
s
f
r
o
m
t
h
e
G
u
l
f
o
f
M
e
x
i
c
o
t
o
t
h
e
A
r
c
t
i
c
O
c
e
a
n
.
T
h
o
u
s
a
n
d
s
o
f
u
n
d
e
r
c
u
r
r
e
n
t
s
k
e
e
p
t
h
e
s
e
a
s
i
n
m
o
t
i
o
n
.
T
o
g
e
t
h
e
r
,
t
h
e
y
f
o
r
m
f
i
v
e
g
r
e
a
t
c
i
r
c
l
e
s
,
t
h
e
o
c
e
a
n
c
u
r
r
e
n
t
s
.
S
O
U
T
H
A
M
E
R
I
C
A
N
O
R
T
H
A
M
E
R
I
C
A
P
a
c
i
f
i
c
O
c
e
a
n
