no a shark can not swim without it's top fin
They allow the shark to swim. A shark with no fins would be unable to swim. Any individual fin provides steering and propulsion depending on exactly which fin you're talking about. The dorsal fin (the one on top of the shark that sticks up above the water in any cartoon about a shark) is mainly for steering.
A dolphin's fin is rounded at the top, but a shark's fin is straight
caudal fin-the tail pectoral fin-the tail on the ventral side of the shark just above the pelvic fins pelvic fin- the underside fins that serve as the "arms" of the shark dorsal fin-the top fin that is usually seen on the surface of water in shark attacks
caudal fin-the tail pectoral fin-the tail on the ventral side of the shark just above the pelvic fins pelvic fin- the underside fins that serve as the "arms" of the shark dorsal fin-the top fin that is usually seen on the surface of water in shark attacks
A black tip reef shark is called a black tip reef shark because its fin and tail has black markings on the top.
a dolphin can only swim up and down because its muscle structure and it spine are designed that way, if a dolphin were to swim side to side the muscle near its tail would swell damaging the spine if a shark or fish were to swim like a dolphin the same thing would happen eventually resulting in death.
The fin on the top/back of all fish is called the "Dorsal Fin."
The Pelagic ocean is the top part of the ocean where the fish swim around. The top competition in this part of the ocean is the shark.
A dorsal fin, (or top fin), is used to steer the dolphin, and to help it balance.
The Great White Shark, also known simply as the "White Shark", or "White Death", has four main fins altogether. The three most obvious are, the two pectoral fins on the sides, and the large dorsal fin on the back. The smaller harder to see second dorsal fin is lower down the back. Here starts the debate about the number of fins. Many people refer to the tail as the "tail". If the tail is referred to as a fin then the name of the fin is "caudal fin", and there are several other small fins that the average person is not aware of and has never really seen. They are the pelvic, and the anal fin. Lastly, there is the tiny fin spine, which is very hard to see. If you count all of these including the "tail" as fins, there is a total of eight all together. This is a highly adapted species and listed as "vulnerable" with the "population trend unknown" by the IUCN Red List. For more details, please see sites listed below.
Aside from humans, the Great White Shark has been recorded several times falling prey to the Orca Killer Whale. Orca attacks are rare, and the Great White has no effective defense against the much more intelligent Orca.
The fins on a dolphin, whale, shark, basically all marine life, have evolved in such a way as to exemplify their strengths. A dolphins strength is to be fast and agile. Their fins help them to navigate the waters in the most energy efficient maner. Their flukes (tails) are incredibly strong and help to propel them through the ocean/lakes/and rivers. Also the dolphins fluke moves up and down, not side to side like a shark.