He was looking for a tight seal.
Echo-location, location, location (Replace "bat" with "zubat" if you wish.)
They all look the same.
What does a walrus and Tupperware have in common? .. They both like a tight seal *What looks like a lemon and shaped like a rock? .. A lemon shaped rock *What is brown and sticky? ..A brown stick
To find a tight seal.. Badum tsst
Theyre always on the lookout for a tight seal.