Bimini Island in the Bahamas is where these photographs were taken. It is a small island 80 km (50 miles) from the Florida coast and has a large variety of shark species. On this trip, we also encountered great hammerheads, nurse, blacknose, blacktip, and bull sharks. They are commonly found in shallow water around coral reefs.
Caribbean reef sharks (Carcharhinus perezii) are the most common requiem shark species encountered by divers in the Caribbean sea. They also inhabit parts of the Western Atlantic ocean. If you dive in the Caribbean you may encounter this shark as it is relatively common.
Most of the baited shark dives involve the Caribbean reef shark. This is often the first “shark dive” new divers will take part in and it can be thrilling. We did this years ago with our kids and I must say we were nervous and our adrenaline was sure flowing. However, this made us fall in love with sharks when we realized just how majestic they were. This surreal experience led us to pursue our “shark hobby” and we have been photographing them ever since.
They average about 1.5 to 2 meters (5-7 feet) in length but can reach lengths of about 3 meters (9 feet). They often hang out around Caribbean reefs and it is likely the largest shark you will encounter while reef diving. Their diet consists of a variety of fish, octopus and small rays.
Caribbean reef sharks can evert their stomachs which means the stomach is turned inside out. This is helpful to discard undigested food and plastic. Unfortunately, our oceans are now full of discarded plastic from human consumption. These plastics are often ingested by marine organisms and are responsible for many needless deaths.
Scuba diving in the dark is always an adrenaline rush because you know that there are sharks near you but you can’t see them until they suddenly appear. We love night dives because they add an entirely new dimension to exploring the underwater world. We photographed these great hammerhead sharks around Bimini Island in the Bahamas.
Sharks are very comfortable swimming in the water at night. To simplify, their eyes are designed to allow light to pass through the retina twice which enables sharks to see in the dark. It is believed that sharks can see about ten times greater than humans in clear water.
They also have a cephalofoil (the hammer) that is full of electrical sensors. These electroreceptors are interconnected jelly-filled pores called ampullae of Lorenzini and aid in hunting as these sensors pick up electrical signals given off by all living creatures including humans. Therefore, a shark at night is very aware of your presence and location in the ocean even though you have no idea where they are.
It is interesting how your perspective for photography changes with subsequent trips to a game park. Our first trip in 2017 to the Serengeti National Park in Tanzania was so overwhelming with all the animal life that our cameras never stopped shooting and we took over 6,000 photographs. In 2018, we took half that number and began to focus more on interesting situations. This lion cub entertained us for a long time.
There are many prides of lions scattered throughout the Serengeti. We were traveling in a more remote area of the park when we came across a very small pride. It was unusual in that there were two males (brothers) instead of one, just two females and only a single cub.
There are advantages to having two males as the head of the pride. If another male attempts to challenge the pride to become the dominant male then he would have to fight two males instead of one. Therefore, his chance of being successful would be severely reduced. However, according to our guide, only one male will mate with the females and the other brother is subordinate.
It is not uncommon for a new male or males, in this case, to kill cubs that they have not fathered. This causes the female to come back in heat and therefore he can mate with her. This female had only one cub. We assume that it was his offspring because why kill some cubs but leave one. Therefore, this female either had only one cub or some tragedy occurred that killed the other cubs if she had given birth to a few babies.
Having no brothers or sisters to play with meant that this little cub easily got bored and continuously harassed its mother. She was attempting to sleep but on numerous occasions when it would look to play with her she would growl at the pesky little cub. It would role in the grass, chew on sticks and feed. All this was very entertaining.
When most people think of sharks, they think of species like the great white shark, tiger shark, and bull shark. These are known as requiem sharks and have that classic shark appearance. However, there a numerous species of shark that look very different from requiem sharks including the nurse shark (Ginglymostoma cirratum). These are very common sharks in the Caribbean and often encountered by new divers.
The head is broad with tiny eyes and has two barbels (whisker-like appendages) that are used in the search of food. Their teeth are small and designed for crushing as part of their diet includes eating shrimp, crab, and lobster. They are nocturnal and during the day they are often seen laying under ledges but are also seen in the open on the sand.
They are a fairly large shark and can reach over 3 meters or about 10 feet although most are much smaller. They can tip the scales between 90 to 115 kg (200-250 pounds). The gestation period for nurse sharks is about 6 months and generally, they have between 20-30 pups.
Although many divers see them as harmless, their mouth can produce a tremendous suction and could easily suck in fingers or a hand which they generally will not let go of. Therefore, like all sharks, they must never be touched and need to be respected.
We arrived at this dry riverbed at just the right time to see this small herd of elephants. The rains were late and had not arrived in the Serengeti yet. After a few minutes, it became apparent why they were here. In the photo below you will notice a small hole in the sand about the width of their foot. Inside there is water.
We assume that the elephants have dug this hole themselves into the dry riverbed. The Serengeti can be a tough place to live in and animals must be innovative to survive. The adults will pass these skills onto the young calves.
Elephants have a wonderful group dynamic. They work collectively for the survival of the herd. As large as they are they are amazing coordinated and use their feet and trunks to perform tasks that you would think they would be incapable of. However, if you are a young calf, drinking all that water can be exhausting and sometimes you just need to get off your feet.
Fortunately, we were able to spend about 20 minutes with this herd before they had all drank from the water hole and began moving on. This group of seven consisted of 2 calves, juveniles (male and female) and adults. We never get tired of seeing and photographing elephants.
Although we love to photograph all sharks, our favorite is the great hammerhead (Sphyrna mokarran). Generally, it is a cautious shark and will keep its distance from scuba divers. There are 9 species of hammerhead sharks worldwide but the great hammerhead is the largest. An average adult reaches lengths of about 3.6 to 4.3 meters (12-14 feet) but can reach 6 meters (20 feet) and exceed 550kg (1,200 pounds).
Great hammerheads are newer sharks on the evolutionary scale and have developed some unusual characteristics. The unique feature of this shark is obviously the head. The “hammer” which is called a cephalofoil is full of electrical sensors. These pores called ampullae of Lorenzini aid in hunting as these sensors pick up electrical signals given off by all living creatures including humans.
As you view these photographs notice how different the shark can look depending on the angle of the photograph. On a larger shark, the cephalofoil is about a meter (3 feet) in length and the eyes are at the ends which gives it a large range of vision.
The diet of this shark is diverse. They will feed on a variety of fishes including tarpons, porcupine fish and even other sharks. As well, lobster, squid, and octopus form part of their diet. However, their favorite food is rays. Stingrays bury themselves in the sand and the great hammerhead uses its cephalofoil with its electrical sensors to detect their location.