Sharks become temporarily paralyzed when flipped upside down due to a trance-like state called tonic immobility, a reflex triggered by disorientation, sensory overload (especially in their snout's pores), or physical restraint, causing their muscles to relax and breathing to become rhythmic, essentially making them "play dead" to deter predators or facilitate mating, though scientists still debate its exact purpose and usefulness for apex predators.
TONIC IMMOBILITY… 💣⚡️🦈 Tonic immobility in sharks is a natural, trance-like state of paralysis that some sharks enter when flipped upside down or stimulated in other ways. This state, also known as “animal hypnosis,” causes the shark to become temporarily motionless and unresponsive.
Sharks usually enter tonic immobility in less than a minute. If undisturbed they can remain like this for up to 15 minutes. Tonic immobility has been used to help test the effectiveness of chemical shark repellents.
Tonic immobility (TI) is an innate defensive response against predators (Fanselow and Lester, 1987; Gallup, 1977; Ratner, 1967; Woodruff, 1977). In species that exhibit TI, the primary triggering stimuli are physical restraint and pressure on certain body parts.
Sharks have a reflex that is activated when you push in the underside of their nose that will often cause them to drop their mouth open. If you are inexperienced and do not know how to handle the situation, this type of reaction can make the encounter much worse.
Tamayo Perry was fatally attacked by a shark on June 23, 2024, while surfing near Goat Island off Oahu's North Shore, sustaining multiple bites, including severe injuries to his arm and leg, after which fellow surfers brought him to shore, where he was pronounced dead by paramedics. He was on a break from his job as a lifeguard when the incident occurred, and officials later posted shark warnings in the area.
One of their most fascinating hunting techniques involves targeting great white sharks—a formidable opponent by any measure. Orcas have learned that flipping a shark onto its back induces a state called tonic immobility, a temporary paralysis that renders the shark completely still.
Tonic immobility in humans is a newer field of study, but it is becoming clear that this response is extremely common in sexual assault victims. When someone is assaulted, they may feel themselves becoming stiff, rigid, and unable to move, either for a portion of an assault or throughout the full traumatic event.
It might seem harmless (and make for great photos), but scientists have learned that putting sharks into tonic immobility may actually be harmful for them - creating physiological stress and tremendous distress! To learn more check out ⬇️⬇️⬇️ It is undeniably an incredible sight....
In conclusion, while shark meat, including that of bronze whaler sharks, is a significant protein source, it might carry potential health risks, particularly from Mercury and Arsenic and may cause cardiovascular diseases, neurological damage, cognitive deficits, and in severe cases, increased cancer risk.
Instead of swimming away: stand your ground, face the shark, make eye contact, extend your fins out if you can to ask for space, and if you absolutely need to then push firmly down on the top of the shark's head to guide them away from you, making sure to follow through as they swim away.
Scientists estimate the Greenland shark lives at least 250 years. They may live over 500 years.
Welcome back! Last time, we talked about a reaction that can happen during sexual assault called tonic immobility. Basically, this is a state of temporary paralysis where you're fully conscious but you can't move, yell, or feel pain.
Your Body Holds the Stress
Trauma doesn't just affect your mind—it leaves physical imprints, too. Chronic stress from trauma can settle into your muscles and tissues, leading to tension, pain, or unexplained fatigue.
In fact, the brain is hardwired to deliver a wider range of reactions, which can be summed up as fight, flight, freeze, fawn and flop. The latter two being the least discussed and talked about. All of them are a natural outcome of fearful situations or extended periods of trauma.
A 2025 study in the journal Reviews in Fish Biology and Fisheries suggests that tonic immobility has no purpose and is just an evolutionary hangover.
Bump-and-bite attack – the shark circles and bumps the victim before biting. Great whites are known to do this on occasion, referred to as a "test bite", in which the great white is trying to identify what is being bitten.
If a shark charges, fight back
“That happens nine times out of 10.” If that does not work, and a shark tries to bite a swimmer—or even has a limb in its mouth—Naylor says the best course of action is to poke the shark hard in the eyes.
Because under their snouts are highly sensitive pores called the Ampullae of Lorenzini, tiny receptors that detect electrical signals. Touching that area can overstimulate them, causing a shark to reflexively open its mouth wide.
Leonardo DiCaprio — Great White in a Cage While filming a documentary, a great white shark breached DiCaprio's cage, partially forcing its way inside. The incident was described as one of the most frightening moments of his life—and a reminder that even steel bars aren't guarantees in the ocean.
At 13, Bethany Hamilton lost her arm in a shark attack while surfing — but she refused to let that moment end her story. Fueled by faith and fierce determination, she was back on her board within weeks, eventually becoming a world-class surfer and mother.