Moby dick is not big. Because there are not many sharp teeth to bite prey, they usually suck the whole food into their mouths, so the prey should not be too big, otherwise it may choke to death.

Narwhals are generally 4 to 5 meters long (excluding tusks), and males are slightly longer than females. The average weight of adult whales is 800~ 1600 kg, which is larger than that of beluga whales and has stronger attack power than beluga whales.