These sharks are social creatures and have a specific area to which they return after roaming around for food. While hunting, they hunt individually, especially in the evenings. During the day time, they roam about in groups of 5 to 20.
Facts on Gray Reef Sharks
The only distinguishing feature in the comparison of these two species, is that blacktip reef sharks have a distinct black tip on their dorsal fin.
They give birth to live offspring, just like humans, and their embryos get their food from the placenta inside the womb of the female shark. At a time, the female gray reef shark can give birth to one to six young ones.
The depth at which these fish are found ranges from about 10 to 900 feet, but then they are also known to dive deeper to more than 3,000 feet.
Ordinarily, they are highly active at night, but there are times when these fish form schools and hunt during the day time. When in groups, they swim at the bottom of the sea and sometimes, are found to form loose aggregations.
The water current should be flowing towards the leeward sides of the reefs. Studies have shown that those sharks that live near reefs do not stay there for a long time and travel continuously. On the other hand, those which live in lagoons are found to return to the same site.
These sharks are mostly found in the Pacific―along the coasts of New Zealand, northern parts of Australia, southern China, Indonesia, and Philippines, and the Indian Ocean―where they inhabit waters of Maldives and Madagascar. Besides these regions, they are also found in the seas surrounding the Indian and South African peninsula, and the Red sea.
In several regions, gray reef sharks are hunted extensively, which has resulted in them becoming endangered. Moreover, continuous depletion of their habitat and late age of maturity also put tremendous pressure on their population. Conservation methods have yielded results, but more needs to be done.