How do zebra sharks manage respiration without constant swimming?
Answer
They actively pump water over their gills using mouth and throat muscles.
Unlike many other shark species that must maintain continuous forward motion to force water over their gills—a process called ram ventilation—the zebra shark possesses the capability to breathe while stationary. This is achieved through muscular action in the mouth and throat area, allowing the shark to actively pump water across the gill structures. This adaptation enables them to rest motionless on the seafloor, often propping themselves up with their pectoral fins while facing the current to maximize oxygen flow, especially during daylight hours.
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