**** Carcharhinus melanopterus ( Blacktip reef shark )

Blacktip reef sharks patrol the outer shoreline, while green turtles are ubiquitous in the inner leads in particular.

Blacktip reef sharks have extremely small home ranges and exhibit strong site fidelity, remaining within same local area for up to several years at a time.

Blacktip reef sharks, particularly small individuals, fall prey to larger fishes, including groupers, grey reef sharks, tiger sharks ( Galeocerdo cuvier ), and members of their own species.

Blacktip reef sharks follow each other as a prelude to mating.

Blacktip reef sharks are popular subjects of public aquarium exhibits, because of their " sharky " appearance and modest size, and are also attractions for ecotourism divers.

* Carcharhinus melanopterus, Blacktip reef shark at FishBase

Two thirds of the island is surrounded by an elkhorn coral barrier reef, providing an ecosystem for over 250 fish species and a variety of other marine life including spotted eagle rays, nurse sharks and lemon sharks, and juvenile Blacktip reef sharks and Whitetip reef sharks.

Also sharks Blacktip reef sharks can be found feeding in the sea off rawa.

# REDIRECT Blacktip reef shark

This is a popular spot amongst recreational scuba divers, who are lured by the opportunity to dive in crystal-clear water and meet several species of fish, including giant groupers, nurse sharks and several types of reef sharks such as the Caribbean reef shark and the Blacktip shark.

* Carcharhinus melanopterus ( Blacktip reef shark )

Once the sardines are rounded up, sharks ( primarily the Bronze Whaler, but also Dusky Shark, Grey Nurse Shark, Blacktip Shark, Spinner Shark and Zambezi Shark ), game fish ( including Shad / Elf a. k. a. Bluefish, King Mackerel, various kingfish species, Garrick, Geelbek and Eastern Little Tuna ) and birds ( like the Cape Gannet, cormorants, terns and gulls ) take advantage of the opportunity.

* Carcharhinus melanopterus ( Blacktip Reef Shark ) at IUCN Red List

* Biological Profiles: Blacktip Reef Shark at Florida Museum of Natural History Ichthyology Department

Beginning in summer 2013, guests will be able to enjoy Blacktip Reef.

** Blacktip poacher, Xeneretmus latifrons.

According to Texas Parks and Wildlife, the following fish have been caught in the bay: Striped Bass, Gafftopsail catfish, Atlantic croaker, Black drum, Red drum, Southern flounder, Barred grunt, Hake, Skipjack herring, Crevalle jack, Ladyfish, Gulf menhaden, Pigfish, Smooth puffer, Sand seatrout, Spotted seatrout, Blacktip shark, Gray snapper, Southern stingray, Gulf toadfish, Tripletail.

* Blacktip grouper, Epinephelus fasciatus.

** Blacktip trevally, Caranx heberi.

*** Myripristis botche, Blacktip soldierfish,.

* All sharks, such as tiger, great white, nurse and reef sharks

The percentage of the total fish biomass on the reef is made up of 85 % apex predators, creating a high level of competition for food and nutrients among local organisms — particularly sharks, jacks, and other carnivores.

* Carcharhiniformes: Commonly known as groundsharks, the species include the blue, tiger, bull, grey reef, blacktip reef, Caribbean reef, blacktail reef, whitetip reef and oceanic whitetip sharks ( collectively called the requiem sharks ) along with the houndsharks, catsharks and hammerhead sharks.

The boat owners also " call in " sharks which, when they arrive from the ocean, swoop through the shallow water above the reef and snatch food offered to them.

The reef also serves as a natural barrier against sharks and jellyfish.

The oceanarium is underground and has an 83 metre long travelator that moves visitors along a submerged glass-windowed tunnel from which they can look at an array of marine life including a coral reef, stringrays, moray eels, turtles, sharks, and other fishes.

One of the most common reef sharks in the Indo-Pacific, it is found as far east as Easter Island and as far west as South Africa.

Grey reef sharks are fast-swimming, agile predators that feed primarily on free-swimming bony fishes and cephalopods.

Many grey reef sharks have a home range on a specific area of the reef, to which they continually return.

* 1947 – Thor Heyerdahl's balsa wood raft the Kon-Tiki, smashes into the reef at Raroia in the Tuamotu Islands after a 101-day, journey across the Pacific Ocean in an attempt to prove that pre-historic peoples could have traveled from South America.

The group proceeded to Little Andaman Island, where they spent ten days surfing several spots for the first time, including Jarawa Point near Hut Bay and the long right reef point at the southwest tip of the island, named Kumari Point.

The same storm also created a reef barrier at the Atlantic Ocean.

The reef surrounding Clipperton is exposed at low tide.

The coral reef surrounding the seaward side of the atoll is generally broad, flat, and shallow at about below mean sea level in most locations and varying from 300 to 650 feet ( 100 to 200 m ) in width.

At the outer edge of the reef shelf, the bottom slopes very steeply into deep water, at some locations dropping to more than 1, 500 feet ( 457 m ) within 0. 6 miles ( 1 km ) of the shore.

Kingman Reef () is a largely submerged, uninhabited triangular shaped reef, east-west and north-south, located in the North Pacific Ocean, roughly half way between the Hawaiian Islands and American Samoa at.

Most geologists and paleontologists would probably set the Proterozoic-Phanerozoic boundary either at the classic point where the first trilobites and reef building animals ( archaeocyatha ) such as corals and others appear ; at the first appearance of a complex feeding burrow called Treptichnus pedum ; or at the first appearance of a group of small, generally disarticulated, armored forms termed ' the small shelly fauna '.

* Slab reefing, which involves lowering the sail by about one-quarter to one-third of its full length and tightening the lower part of the sail using an outhaul or a pre-loaded reef line through a cringle at the new clew, and hook through a cringle at the new tack.

* April 10 – The ferry Wahine strikes a reef at the entrance to Wellington Harbour, New Zealand, with the loss of 53 lives, during Cyclone Giselle, which provides the windiest conditions ever recorded in New Zealand.

After a 101-day, 4, 300 nautical mile ( 4, 948 miles or 7, 964 km ) journey across the Pacific Ocean, Kon-Tiki smashed into the reef at Raroia in the Tuamotu Islands on August 7, 1947.

The larger of the company's two ships, the William, wrecked on the reef at the north end of what is now called Eleuthera Island, with the loss of all provisions.

They reach highest diversity in reef environments but are also widespread on shallow shores, around the poles — refugia where crinoids are at their most abundant — and throughout the deep ocean, where bottom-dwelling and burrowing sea cucumbers are common — sometimes accounting for up to 90 % of organisms.

Volcanic islands located beyond the warm water temperature requirements of reef building, or hermatypic, organisms become seamounts as they subside and are eroded away at the surface.

An island that is located where the ocean water temperatures are just sufficiently warm for upward reef growth to keep pace with the rate of subsidence is said to be at the Darwin Point.

Oceanic mantas reach at least in width and there are anecdotal reports of even larger specimens, while reef mantas reach about in width.

The western side of the atoll contains many of Aitutaki's important features including a boat passage through the barrier reef allowing for anchorage close to shore at Arutanga.

The Seabees also blasted an opening in the reef at Nanumea, which became known as the ' American Passage '.

The working ends of the reef knot must emerge both at the top or both at the bottom, otherwise a thief knot results.

The name " reef knot " dates from at least 1794 and originates from its common use to reef sails, that is to tie part of the sail down to decrease its effective surface area in strong winds.