2 verifications about Tiger Shark Tiger Shark ×
“Tiger sharks cannot stop swimming.”
The evidence does not support the claim. Authoritative sources on tiger sharks state they can use buccal pumping, allowing them to keep breathing without constant forward motion. Tiger sharks may often stay on the move, but that behavior is not the same as an inability to stop swimming.
“Tiger sharks will sink if they stop swimming.”
Tiger sharks do tend to sink in open water if they stop swimming because they are slightly negatively buoyant. But the broad wording leaves out crucial context: they can still stop swimming, keep breathing, and rest motionless on the seafloor. That omission changes the practical takeaway, so the claim is better treated as an oversimplification than a cleanly true statement.