Mega Unagi

Mega Unagi are large Unagi in the game, New Super Mario Bros..

Attacks
The Mega Unagi will kill Mario instantly when he doesn't move.

Strategy
A Mega Unagi will try to chase Mario in underwater levels. If Mario stops, it will eat him. However, Mario shouldn't underestimate it as it's a threat in the early levels. The only way to get rid of it is to exit.