Barracuda

Barracudas are solitary as adults but young ones form large schools called batteries. They are fearsome predators, using bursts of speed to catch prey. Barracudas have a unique sensory organ called the lateral line, which helps them detect vibrations and changes in water pressure, allowing them to avoid collisions and locate prey efficiently.

What sensory organ helps Barracuda detect vibrations and changes in water pressure?

What allows Barracuda to stick together without bumping into one another?