Stealth

Stealth is a gameplay mechanic found in all Typer Shark games. It allows Enemies to partially conceal the letters on their flanks, and makes them move more quickly.

Typer Shark! Deluxe
In Typer Shark! Deluxe, stealth can be used by normal Sharks, as well as Hammerhead Sharks, Tiger Sharks, Piranhas and Strong Piranhas. An enemy using stealth will move much more quickly to the center of the screen before slowing down. The word (or letter) an enemy is using can be seen in Typer Shark Deluxe, thus allowing the player to attack an enemy even while it is using stealth, but the word is somewhat translucent and difficult to make out.

Typer Shark
In Typer Shark, stealth enemies, referred to as "Ghost Sharks and Piranhas" concealed their letters completely, meaning they could not be attacked by the Diver at all until they had moved to about the center of the screen. Thankfully, the only shark that could use stealth in the original game was the Ghost Shark.

Additionally, the White Piranha could use stealth.