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Hawaiian Shark Species

Parts of a SharkReef-Slope PredatorAncient FossilsHawaii Shark Attacks

Hawaiian SharksHawaiians & Sharks

To Hawaiians, mano (Sharks) are considered 'aumakua (family or personal gods.) Often, a departed ancestor took the form of a shark after death and appeared in dreams to living relatives. Hawaiians who had a shark as their 'aumakua did not eat sharks, and provided food to a special shark thought to be the relative.

Not all sharks are 'aumakua. However, many modern Hawaiians feel very uncomfortable when sharks are killed, even after an attack on humans occurred. Although the present day Hawaiians don't pay "homage" to the shark 'aumakua, the ancestral association still exists. Their loggias is, "if my ancestors worshipped the mano, then we should at least respect it as part of our cultural past, if Hawai'i is to remain Hawaiian." Quote from Charles Kauluwehi Maxwell Sr., Honolulu Advertiser

Sharks played a very important role in the lives of the ancient Hawaiian people. Hawai'ian chants tell of the shark's assistance in the first migration to Hawai'i. A huge shark named Kamohoali'i, the brother of the volcano goddess Pele, guided the double hull canoes to Hawai'i. The shark was deified in stories and chants and many believed it possessed supernatural powers.

Occasionally shark attacks occur in Hawai'i. In almost every incident, the attack could have been prevented if the logic of the ancient Hawaiians was observed (as stated below.)…

"If the water is rough, and is murky, stay out of the ocean because sharks are most likely in the area. They tend to come around in this condition when food is plentiful, as fishes and turtles usually feed under these conditions. Stay way from the mouths of rivers. usually dead animals wash down form the mountain and the sharks are the ones that keep the ocean clean." - Charles Kauluwehi Maxwell, Sr.

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Parts of a Shark

Shark Eyesight

hammerheadIn poor light or limited visibility a shark's eyes are ten times more sensitive than those of humans. The eyes of sharks contain a special mirror layer called the 'tapetum lucid'. This layer is also present in the eyes of nocturnal animals, such as cats. This reflective layer enables sharks to effectively hunt at night.

Shark Smell

The shark has been called the "nose of the Sea", since smell ranks second in sensitivity among the shark's various senses. Sharks can detect odors at a distance of about 500 years and are also able to detect minute concentrations of odors. A shark can smell a single drop of blood in an Olympic sized swimming pool!

Shark Teeth

Unlike most other fishes whose teeth are "fixed" in their jaw, sharks' teeth can be replaced indefinitely. Several sets of reserve teeth can be seen sitting behind the front rows. If one or more of the front teeth are lost another will move up to replace it. An individual shark may replace thousands of teeth during its lifetime.


Lateral Line

You can see a line that runs from the head to the tail along the upper part of each shark's body. This line is called the lateral line. It contains millions of tiny cells that are specially designed to detect vibrations in the water. The lateral line is extremely sensitive and is able to detect movement in the water from several hundred yards away. The lateral line enables a shark to detect a fish resting beneath the surface of the sand by the vibrations produced by its heartbeat!!

Shark Skin

Sharkskin is unique: tough, abrasive, and composed of tiny, hard, tooth-like scales called denticles. These denticles are structurally similar to shark teeth. As sharks grow, the denticles are shed and replaced by slightly larger ones. Denticles break up water flow, improving a shark's swimming efficiency by overcoming drag from the water. They also help stave off unwanted bacteria growth. The tiny texture patterns on each denticle cause enough variation to keep large populations of bacteria from growing in 1 place. This unique pattern is being adopted by scientists into new surfaces to be used in hospitals and other locations where bacteria growth is a danger.

Electrical Fields

The most unique method of prey detection used by sharks is their ability to sense the electrical fields given off by all living things. The organs that detect these fields are call the "ampullae of Lorenzini." They can be seen as small dots on the underside of the shark's nose. Ampullae allow sharks to detect other animals which are lying motionless, or in total darkness, or even buried under sand. It appears that sharks may also use this electrical sensitivity to navigate, as they are able to detect the Earth's magnetic field and position themselves in relation to it. This is similar to having an in-built compass.

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Reef-Slope Predator

black tip reef sharkMano pa'ele (Blacktip reef shark), named for the black tips on its fins, is generally found inshore in shallow water. These timid sharks are common throughout the tropical oceans of the world and feed on fishes, crabs octopuses, and squid. They can grow to 6 feet in length, but are usually less than 4 ft.

Sharks are thought to have evolved from armor plated marine animals about 400 million years ago. Sharks, as we see them today, first appeared about 250 million years ago. A shark's skeleton is made entirely of cartilage. They have no rib cage and are easily injured. Sharks lack the swim bladders common in most other fishes, and without them to control buoyancy, tend to sink if they stop swimming. Some sharks can pump water over their gills allowing them to rest on the ocean bottom, but most must whim to maintain a flow of water over their gills.

Sharks have widely varying diets, which includes everything from whales to coral spawn. Of the 350 species of sharks known, only around 50 have ever attacked humans.


Ancient Fossiles

Sharks are the oldest group of jawed fishes alive today, with a fossil record dating back about 450 million years. This is well before the first reptiles (around 300 million years ago), and the first mammals (around 210 million years ago) made their appearance on Earth.

The first sharks had elongated bodies and large triangular fins and a mouth full of teeth similar to modern sharks. Over the eons, numerous families of sharks evolved, many became extinct, while others survived. While the fossils of some modern families of sharks go back 150 million years, most of the 800 species of sharks, rays and skates appeared within the last 50 million years.

Sharks are found in every part of the ocean, from the bright sunlit coral reef to the perpetual night of the deep sea floor. Sharks do not make good fossils. When ancient sharks died, their cartilaginous skeletons disintegrated leaving only the teeth and an occasional vertebrae to fossilize. The oldest known shark tooth fossils were found in Spain and are about 400 million years old. One of the oldest species of shark was the Cladoselache, whom appeared 375 million years ago.

Shark Tank

The above information about Hawaiian Sharks is used courtesy of the Maui Ocean Center.

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