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Fishermen for years have told tales about huge sharks trying to eat their motorboat engines, and now videos are proving this does indeed happen. Shark experts believe that great whites, like the one seen in the below video shot just a few days ago, are attracted to electrical pulses emitted by some boat motors.
It is highly unlikely that a wave could flip a cruise ship.
Whether a shark has enough strength to do so, it would take too much energy for it to even attack and destroy a vessel, and to them, and it's just not worth it for them.
Shipwrecks serve as seafloor features, attracting a wide variety of marine life. As different organisms colonize the ship, a stable community of diverse plants and animals emerges. Plants and corals grow on the ship's hard surfaces, while fish use the wreck as refuge from predators.
Environmental Hazards
As steel wrecks rust away, broken, sharp edges can form. Divers may also encounter sharp encrustation, such as barnacles or oysters, or irritants such as fire coral. Gloves and exposure suits combined with good form to avoid touching the wreck will help prevent cuts and abrasions.
Even a weighted body will normally float to the surface after three or four days, exposing it to sea birds and buffeting from the waves. Putrefaction and scavenging creatures will dismember the corpse in a week or two and the bones will sink to the seabed.
The fish's strange bite can get at the softer areas of the submarines, National Geographic's Ed Yong reports: The fearless cookie-cutters have even disabled the most dangerous ocean creature of all—the nuclear submarine. They attacked exposed soft areas including electrical cables and rubber sonar domes.
Can a whale swallow a human? No, they can't - it's actually not physically possible. While whales can have huge mouths, a whale's throat is a lot smaller than you might expect, essentially the size of a human fist.
A: They got the jaws and teeth right. A megalodon mouth is so big that you could swim into it without touching any of the teeth. It literally could swallow a small car without having to chomp down on it.
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 attempting to identify what is being bitten.
James Michael Grimes ended up in the sea, treading water for 20 hours. His only company, jellyfish and sharks. And his only food – wood. Grimes, 28, was on a Carnival cruise ship with his family, the night before Thanksgiving – November 23 – when he left his companions to use the bathroom around 11pm.
Over the past 100 years since the RMS Titanic sank in 1912, only 18 cruise ships and some ocean liners have been publicly known to have sunk. And, over the past 50 years, only four cruise ships have sunk while navigating on a cruise.
Quick Answer: They are Fast, Smart, and Work as a Dolphin Team. Sharks and dolphins are two of the most formidable creatures in the ocean, but while sharks are often seen as fearsome predators, they are known to be intimidated by dolphins.
Sharks are often viewed as one of the ocean's top apex predators, but despite this rather prestigious classification, there's one marine animal that most sharks prefer to avoid crossing paths with entirely: the bottlenose dolphin.
Their mouths are big enough to hold a human. If they dive with you in there, you could suffocate. A lobster diver that found himself in a whale's mouthOpens in new tab survived because he had scuba equipment to help him breathe.
Michael Packard was trapped inside a humpback whale's mouth for approximately 40 seconds.
Whales have huge mouths, but...
A Blue Whale's throat is only as big as a basketball, so it can barely swallow something bigger than a grapefruit (but that's okay, it doesn't need to when it eats krill!).
Another incident reported in 2016 occurred off the coast of Mexico, when a shark that lunged for the bait broke into the cage and the diver was able to escape uninjured.
The whale shark, Rhincodon typus, is the largest fish in the world.
You can use a knife and aim for the gills or underside of the shark, but don't try stabbing the top. “You won't be able to penetrate it,” he says.
Gallo said remnants of those who died likely disappeared decades ago. Sea creatures would've eaten away flesh because protein is scarce in the deep ocean, and bones dissolve at great ocean depths because of seawater's chemistry, Gallo said. The Titanic sits about 2.4 miles (3.8 kilometers) below the surface.
Most of the bodies were never recovered, but some say there are remains near the ship. What could have happened to the bodies? Some Titanic experts say a powerful storm the night of the wreck scattered the life-jacketed passengers in a 50-mile-wide area, so it's likely the bodies scattered across the seafloor.
When the Titanic sank, it took the lives of 1,497 of the 2,209 people aboard with it. Some bodies were recovered, but names remained elusive.