I do believe that the Mantis Shrimp and the Pistol Shrimp got confused, Jersh referenced the
Mantis Shrimp of The Oatmeal fame, known for hitting things with its thwackers so hard and fast they create cavitation bubbles which also help stun or kill prey in addition to the actual impact (though some species have spears instead).
The superchat referenced the
Pistol Shrimp is able to generate an aimed cavitation bubble using its very oversized claw that stuns prey it hits, which is also cool but not quite as insane or flashy as its mantoid relatives.