Humans have been to the wreck in submersibles but nobody can dive in that pressure.
Sky diving, because sky divers are able to control their descent.
I think that Scuba Divers go to learn about fish or improve the human's knowledge. I know that I enjoy scuba diving and it seems like the perfect way to learn. It can also be fantastic to see the different things that we are sharing Earth with!
The thematic focus of the book "SOS Titanic" revolves around the Titanic disaster in 1912. It explores themes of tragedy, human resilience, and the class divide during that era. The book portrays the courage and sacrifice of individuals in the face of a catastrophic event.
They use the sea-exploration robots to look and explore places in the ocean where it is not safe for human divers. There are certain parts of the ocean where the pressure from the water can crush a human being and ultimately kill them. If the water pressure does not crush the human there is the chance and the equipment could be damaged also ending in termination. Also under the water it can be difficult to sea hence why cameras and technology are involved.
it depend on the density of the water . fresh water is more dense than sea water. therefor human can float on sea water easier than fresh water. divers are good at water density.
Pearls are formed inside oysters, and oysters grow underwater. If you want to find "natural" pearls (that is, those that have developed w/o human intervention) you need a diver to collect the oysters for you before you crack them open to see if there's a pearl inside.
Whale sharks are not generally dangerous to human beings; in fact, they are friendly and occasionally even give rides to divers. But whale Sharks are still big and strong animals. Like any big and strong animal they could do some damage if they decided to.
Unfortunately we do not know weather angler fish really attack people no one has ever approached one swimming in the sea. maybe if some divers went down in a submarine they could attach a human like dummy to the submarine and then find and approach an angler fish.
Well, I've never heard of a Giant Squid eating a human but I do know they killed a few. Its likely there are numerous deaths and attacks on fishermen and divers but most go unreported. Technically a Giant Squid has the capability to klil and devour a human. It is even rumored they could and have killed sperm wells but such cases have never been reported. Odds are we will never know if they can kill some of the largest animals in the see since whales sink when they die and rarely wash up on shores.
Boyle's law deals with how gasses behave when the pressure changes. If you're a human, you are dependent on having some gasses in your body (Lungs, ears, sinuses...). And if you're a diver, you'll experience plenty of pressure changes. Knowing Boyle's law will prepare a diver for what he'll have to do to avoid injury.
The human body is naturally positively bouyant, as is much of the gear that a diver wears. Wearing a weight belt (which is basically just a nylon belt with lead weights on it) gives a diver the necessary negative bouyancy to overcome that positive bouyancy. A diver without a weight belt would not be able to swim down more than 2-3 feet, and would constantly pop back up the surface. Some divers actually have 'weight integrated' systems, rather than using separate stand alone weight belts. But the basic concept is still the same.
A typical person can stay underwater for between 30 seconds and a minute. Trained divers can last for 2 to 3 minutes. Pearl divers can last for up to around 7 minutes. The world record for staying underwater (without using pure oxygen first) is just over 9 minutes. (Tom Sietas) Sietas' World Record using pure oxygen beforehand is a time of just over 16 minutes.