The Great Fiji Shark Count

Counting Fiji's sharks, rays and turtles

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You are here: Home / Shark Biology and Lifestyle / Shark Feeding Behaviour

Shark Feeding Behaviour

How do sharks feed?

Many people are afraid of sharks, imagining them to be huge fierce man eaters, spending their lives lying in wait to make a meal of an unsuspecting human being. Nothing could be much further from the truth!

They are “Apex Predators”, which means that they are at the top of the marine food chain – not much eats sharks other than bigger sharks! Some are more “Apex” than others: Basking Sharks and Whale sharks, although very large, feed on tiny plankton which they filter out of the water using ”gill rakers” which they have instead of teeth.

Black tip shark  Tim Rock Many other sharks feed on small crabs, shellfish and octopus buried in the sand and inside holes in rocky reefs, often searching at night when their prey is asleep.

Dead or hurt animals are often targeted by scavenging sharks rather than healthy ones which are difficult to catch.

Many sharks do not feed every day, some only every few weeks, some may not eat for months.

Sharks that do feed on larger animals tend to live out in deeper water rather than on coral reefs. Because it is hard to see very far in deep or muddy water, these sharks use special senses to find food.

Bull shark by  Tim RockLong range

Hearing: Sharks have good ears that pick up sound waves through the water at long distances. They also detect subsonic vibrations with a special set of organs along the side of the body called “Lateral Lines’, which pick up the kind of vibrations a wounded or struggling fish may give out. Sounds and vibrations attract sharks to the area where there might be something to eat.

Medium range

Sight and smell: Sharks can see very well in clear water, and many of them have special reflective eyes, like cats, which help them see in the dark.

They smell through their nostrils and olfactory sacs, across which water can be pumped even when they are not moving. Sight and smell help a shark pinpoint the exact location of something that might be the right size and kind of food.

Oceanic blacktip shark by Alexander SafonovClose range

Electrical sense and touching: Sharks have very special organs in their noses which help them detect the exact position of fish in the water or under sand.

Others have “barbels’; short feelers under their chins, with which they can feel around under sand. These senses allow them to find the exact fish or animal they want to eat.

Sample bite/Tasting

Sharks are still very careful even at this stage, when the food is actually in their mouths. Many will take a shallow sample bite, and taste it with taste buds just behind their teeth, to be certain it is something properly edible. If it does not taste like food, they will often spit it out at this time, and swim away.

This explains why so many “attacks” on humans are just a single bite; most sharks do not feed on mammals and do not recognise the taste of the humans to be food.

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Welcome to The Great Fiji Shark Count !

Throughout the months of April and November every year, you have the opportunity to help celebrate and record Fiji’s amazing coral reef biodiversity, show you care about our world’s delicate coral reef systems, and have fun, by taking part in the FIJI-WIDE SHARK COUNT!

Easy to do, this is suitable for visitors and locals alike, whether you like to fish, snorkel, or SCUBA dive. We hope that tourists, school children, scientists and all people with an interest in the marine environment will take to the reefs with us to search for the Sharks of Fiji!

The Great Fiji Shark Count will be held across Fiji every April and November every year.

You can do a single count, or take part as many times as you like during that month, so that you cover different reefs. All data will be gratefully accepted!

So, see your resort, watersports operator or travel agent, get your Shark identification materials and dive into the beautiful blue waters of Fiji, to be a part of history!

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