Across
1
Largest mammal in the ocean
4
Egg-laying mammal with a duck bill
5
Predatory fish with sharp teeth
6
Fish that swims upstream to spawn
7
Intelligent marine mammal
10
Eight-armed sea creature
11
Crustacean with pincers
12
Small horse-shaped sea fish
Down
2
South American pack animal
3
Wild dog-like animal of North America
4
Flightless bird that swims in cold regions
5
Slow-moving mollusk without a shell
8
Slow-moving reptile with hard shell
9
Largest living primate