Across
1
Intelligent marine mammal
4
Egg-laying mammal with a duck bill
7
Predatory fish with sharp teeth
8
Largest mammal in the ocean
9
Black-and-white bear from China
13
Animal that builds dams
Down
2
Burrowing mammal with poor eyesight
3
Small horse-shaped sea fish
5
Largest living primate
6
Australian burrowing marsupial
10
Clawed sea crustacean
11
Primate closest to humans
12
Slow-moving reptile with hard shell