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Operation Apex Harmony

Tiger Shark in Bimini. photo: Shanda RobinsonTiger Shark in Bimini. photo: Shanda Robinson

There are more than 465 known species of sharks living in our oceans today.

Sharks belong to a family of fish that have skeletons made of cartilage, a tissue more flexible and lighter than bone. They breathe through a series of five to seven gill slits located on either side of their bodies. All sharks have multiple rows of teeth, and while they lose teeth on a regular basis, new teeth continue to grow in and replace those they lose.

Shark ‘skin’ is made up of a series of scales that act as an outer skeleton for easy movement and for saving energy in the water. The upper side of a shark is generally dark to blend in with the water from above and their undersides are white or lighter coloured to blend in with the lighter surface of the sea from below. This helps to camouflage them from predators and prey.

Population

It is difficult to estimate population numbers since there are many different species spanning a large geographic area. However, overall shark numbers are on the decline due to the many threats they face in the wild.

Did You Know?

Sharks predate the dinosaurs by 200 million years. The largest known species of shark, C. megalodon, might have reached a maximum length of 67 feet.

Behaviour

Most sharks are especially active in the evening and night when they hunt. Some sharks migrate over great distances to feed and breed. This can take them over entire ocean basins. While some shark species are solitary, others display social behavior at various levels. Hammerhead sharks, for instance, school during mating season around seamounts and islands.

Some shark species, like the great white shark, attack and surprise their prey, usually seals and sea lions, from below. Species that dwell on the ocean floor have developed the ability to bottom-feed. Others attack schooling fish in a feeding frenzy, while large sharks like the whale and basking sharks filter feed by swimming through the ocean with their mouths open wide, filtering large quantities of plankton and krill.

Tiger Shark

States

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Western Australia
Queensland
New South Wales

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Operation Apex Harmony: Crew Aggressively Approached by DPI Subcontractor
Operation Apex Harmony: Crew Aggressively Approached by DPI Subcontractor
On 1st May, Sea Shepherd's Apex Harmony crew had divers at the Seven Mile Beach shark net at Lennox Head. Well after the dive flag was displayed from the Sea Shepherd small boat Grey Nurse, the boat of the Ballina shark meshing contractor, Wahoo approached aggressively to about 10m from the divers. ...
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Operation Apex Harmony: Sea Shepherd Discovers Huge Shark Fin Shipments
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Operation Apex Harmony: Miss Earth Australia Qld Finalist inspects QLD drum line program
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Operation Apex Harmony: Two rare Japanese Devilrays found in shark net - Queensland
Operation Apex Harmony: Two rare Japanese Devilrays found in shark net - Queensland
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Operation Apex Harmony: Juvenile tiger shark caught on drum line at Point Cartright Queensland
Operation Apex Harmony: Juvenile tiger shark caught on drum line at Point Cartright Queensland
1m juvenile tiger shark caught on the drum lines at Point Cartright, Sunshine Coast Queensland on the 19 December 2015.
Operation Apex Harmony: Tiger Shark caught on Drum line, Gracetown WA
Operation Apex Harmony: Tiger Shark caught on Drum line, Gracetown WA
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Operation Apex Harmony: Global shark crisis! - POWERFUL VIDEO
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Operation Apex Harmony: Tiger Shark Nursed Back to Life!
Today Shark observers on board the Sea Shepherd Response vessel "Bruce" witnessed the release of a 2.4 metre female juvenile tiger shark by WA Fisheries. Suffering with a hook in through it's head, the WA Fisheries department removed the hook and tagged it as a live release shark. The Shark was in p...
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Operation Apex Harmony: WA Shark Cull Claims Another Two Victims
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Operation Apex Harmony: Introducing Operation Apex Harmony
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Operation Apex Harmony: Sea Shepherd's Operation Apex Harmony The Shark Cull Trailer
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In response to the West Australian Government's war on our precious marine life, with the WA shark cull, Sea Shepherd is launching Operation Apex Harmony. The full documentary is coming soon which will showcase how the WA government has ignored the science and the wishes of the majority of the Aust...