Step
Characteristics
1a
Tail fins extend out horizontally from the body
1b
Tail fins extend out vertically from the body
2a
Has teeth or one or more tusks
2b
Has no teeth or tusks
3a
Gill slits behind mouth
3b No gill slits
4a
Black body with white underneath
4b
Dark body with spots and single tusk originating from head
5a
Head is hammer shaped
Identification
Go to Step 2
Go to Step 3
Go to Step 4
Baleen whale
Go to Step 5
Nonshark fish
Killer whale
Narwhal
Hammerhead shark
5b Head is not hammer shaped, and tail is half the length of the body Thresher shark
Which statement can be used to describe some characteristics of the narwhal?
A It has tail fins that extend horizontally from its body, and it has a tusk.
R It has a dark body, and its tail is half the length of the body.
Its body coloring is similar to the killer whale's, but it is larger than the killer whale.
Its head is shaped like a hammer and has a single tusk.