It migrates from cold waters to the tropics each year and has a layer of blubber up to 10 inches (25 cm) thick.
(It; migrates; from cold waters to the tropics; T:each year) (It; has; a layer of blubber up to 10 inches (25 cm) thick)
It It
migrates has
from cold waters to the tropics T:each year
a layer of blubber up to 10 inches (25 cm) thick