The brain is affected as the other organs begin to shut down. Your loved one may seem confused as to time and place and may not be able to recognize people whom they already know. The person may be completely lucid one minute and then drift into a state of confusion.
How Fast can Sharks Swim? Whale sharks are slow swimmers and their top speed is no more than 5 miles (8 kilometers per hour) probably due to the fact that whale shark is the biggest fish in the world. It reaches a length of 40 ft (12 m) and weighs up to 13 tons (12 metric tons). Great white sharks are one of the fast movers in water.
The average speed of a dolphin is 40 km/hr. Certain species of  dolphin may swim faster or slower. There are about 40 species of  dolphins in the world.