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Frequently Asked Questions

How deep do Scalloped Hammerheads swim?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads have been captured from the surface down to a depth of 1,400 feet (431 metres).

Where are Scalloped Hammerheads found?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads are found in all tropical and warm temperate seas, from coastal areas near continents to oceanic islands far offshore.

Where are Scalloped Hammerheads found in the Sea of Cortez?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads are found throughout the Sea of Cortez. Juveniles are often found close to shore but adolescents and adults are most often encountered during the day over submerged mountains called "seamounts" or "goyots".

What do Scalloped Hammerheads eat?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads eat mostly teleosts (bony fishes), but they also take squids, octopuses, lobsters, crabs, stingrays, and even small sharks.

What preys on Scalloped Hammerheads?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads have few natural predators. Potential predators include large sharks, such as the Tiger Shark (Galeocerdo cuvier), and the Killer Whale (Orcinus orca).

Are Scalloped Hammerheads dangerous to humans?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads are not particularly dangerous to humans unless they are provoked in some way, such as by chasing, spearing, or touching them.

How do Scalloped Hammerheads reproduce?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Male Scalloped Hammerheads reach sexual maturity at a length of 6 to 7 feet (1.8 to 2.1 metres) and an age of about 10 years. Females of the species reach sexual maturity at a length of 7 to 8 feet (2.1 to 2.4 metres) and an age of about 15 or 16 years. Like other sharks, Scalloped Hammerheads practice internal fertilization. The pelvic fins of males are equipped with a pair of penis-like organs called "claspers".

Do Scalloped Hammerheads migrate?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Based on their seasonal appearance and disappearance from certain offshore islands and seamounts, Scalloped Hammerheads are believed to be highly migratory. Unfortunately, little is known about their movement patterns away from these areas.

Why do Scalloped Hammerheads school?

Scalloped Hammerhead (Sphyrna lewini) FAQ
No one is sure why Scalloped Hammerheads school. We know that many sharks school at the youngest and most vulnerable stage of their lives. But Scalloped Hammerheads in the Sea of Cortez also school as adolescents and adults, when they have few predators. In the Sudanese Red Sea, however, Scalloped Hammerhead schools feature juveniles at the core with adults cruising the periphery like a protective wagon train in a Western movie.

Do Scalloped Hammerheads sleep?

Scalloped Hammerhead (Sphyrna lewini) FAQ
There is no evidence that Scalloped Hammerheads sleep. Like many active sharks, they probably swim non-stop from birth until the moment of their death.

Have Scalloped Hammerheads ever been exhibited in an aquarium?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Young scalloped Hammerheads have been exhibited in several aquaria, including the Waikiki Aquarium in Hawaii and the Okinawa Expo Aquarium in Japan, but they generally don't survive more than a few months.

Are Scalloped Hammerheads hunted anywhere in the world?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads are commercially fished in many parts of the world, including Southeast Asia and in the Sea of Cortez. The species is also a popular sport fish along the East Coast of the United States and off southeastern Australia.

Do Scalloped Hammerheads have any monetary value?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Scalloped Hammerheads are commercially valued for their meat - which is used fresh, smoked, dried, and salted - as well as for their fins, hides, and liver oil. Their jaws, teeth, and backbones are often sold as curios.

Are Scalloped Hammerheads in danger of extinction?

Scalloped Hammerhead (Sphyrna lewini) FAQ
We don't know whether Scalloped Hammerheads are in danger of extinction. The species seems to be fairly abundant in certain areas, which suggests their risk of extinction is presently fairly low, but we do not have accurate population estimates for any region. Given the slow maturation, long gestation, and small litter size of Scalloped Hammerheads, local populations can be depleted rapidly.

Why are Scalloped Hammerheads important?

Scalloped Hammerhead (Sphyrna lewini) FAQ
top-level carnivores, Scalloped Hammerheads are probably important in maintaining the ecological balance of the seas, particularly that of pelagic fishes and squids. But we still do not understand the nature and extent of their importance as marine predators. a marine resource, Scalloped Hammerheads are an important source of food and other products. But we need to outgrow our selfish view of wildlife in terms of what good or harm they can do for us.

Are Scalloped Hammerheads more active by day or by night?

Scalloped Hammerhead (Sphyrna lewini) FAQ
Like other sharks, Scalloped Hammerheads are suspected to be more active at night than by day. Visual displays may be limited to daylight hours, when the hammerheads are schooling, but individual's average swimming speed and feeding intensity are probably significantly greater at night.

Can the kids swim in the deep end?

CDC: Camp - FAQs
They can only if they pass the deep end test administered by the pool’s lifeguards. They will determine which children are prepared to swim in deep water.

How deep can they swim? How fast?

The Marine Mammal Center
California sea lions have been known to dive 1000 feet deep; however, most dives are less than 100 feet. Most often California sea lions swim a few miles per hour underwater. They can swim 25 mph in short bursts by “porpoising” or leaping out of the water to increase speed.

How deep is the water for the swim?

Frequently Asked Questions
It is shallow enough to stand in at Foster Avenue Beach for the McDonald's Kids Triathlon and the Fleet Feet Sports SuperSprint Triathlon.

Can all the campers swim in the deep end of the pool?

Glenbrook Day Camp, Frequently Asked Questions (FAQ)
Campers have to pass a deep end test before being allowed to swim in the deep end of the big pool. Once they pass this test they will be given a bracelet to wear for the duration of their time at camp indicating they are allowed in the deep end. Please allow your camper to wear it for the duration of their stay with us.
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