A lava baby making Mr. Snappy immune to the volcanic jets. when touching a volcanic jet, your shark can't eat for a while.
Volcanic jets are found in the tunnel of death and on your way to the crab lair.
The only countermeasure to the Volcanic Jets is Lava Baby.
So far no shark can eat volcanic jets (like toxic waste barrels) However, you can wait a few seconds, and the jets will burn out.
Hungry Shark World