Which of the following types of hammerhead sharks are considered dangerous to humans?
the great hammerhead
the smooth hammerhead
both of the above
Though three out of the four types of the common hammerhead sharks are considered to be dangerous to humans, there have only been 38 recorded hammerhead attacks on humans since 1580, and no one has ever been killed by a hammerhead.
Shark ____ are cut off in a process called finning.
Like most sharks, hammerheads are fished commercially for their hides and meat, and their fins are cut off in a process called finning. Shark fin soup is popular in Asia, but shark finning is outlawed in United States waters.
The hammerhead shark's mouth is _____ than most other large sharks.
The hammerhead's mouth is smaller than most other large sharks and they have small, sharp, serrated teeth up front with larger, flatter teeth in the back. These hard back teeth are used for grinding up tougher prey, like shellfish.
All sharks have electrical sensors in their nose and heads called ampullae of ____ that help them stalk their prey.
Ampullae of Lorenzini can detect weak electric emissions from other sea life. In the case of hammerheads, the ampullae are spread out over a greater surface area, giving the shark the ability to cover more ground and sense its prey more easily.
In which United States city was a shark pup born to a female shark that had not had any contact with a male shark in over three years?
In 2001, in a zoo in Omaha, Nebraska, a female hammerhead shark gave birth to a male pup even though she had been celibate for more than three years. Researchers concluded that the mother had fertilized her own eggs and had a virgin birth called parthenogenesis.