SPERM WHALES TAILING: ABACO, BAHAMAS


Sperm Whale Tailing, Abaco, Bahamas (©BMMRO)

SPERM WHALES TAILING: ABACO, BAHAMAS

There can be very few people in the world whose breath would not be taken away by the sight of a massive sperm whale tailing close by. And as it happens, this very phenomenon can be seen in the deeper waters around the coast of Abaco. Here is a small gallery of photos of sperm whales tailing, taken from the BMMRO research vessel. There’s no point in my writing a lot of commentary to the images – they speak for themselves of the awesome (in its correct sense) power and grace of these huge mammals.

Sperm Whale Tailing, Abaco, Bahamas (©BMMRO) Sperm Whale Tailing, Abaco, Bahamas (©BMMRO)

In these images, you will notice that the whales have distinctive patterns of notches and tears in their flukes (ie tail fins). As with a dolphin’s dorsal fin, these areas of damage are like fingerprints – unique to each individual, and a sure means to identification. The researchers log each sighting and assign a cypher – a whale will become known as ‘B42’ and not usually by a less scientific name like ‘Derek’ or ‘Susie’).

Sperm Whale Tailing, Abaco, Bahamas (©BMMRO) Sperm Whale Tailing, Abaco, Bahamas (©BMMRO)

Q. What happened next?  A. You would see the tail emerge as the whale dives deep… Sperm Whale Tailing, Abaco, Bahamas (©BMMRO)

One of my favourite whale views is of the tail as it rises above the surface with water streaming off the flukes, before it flicks over and disappears beneath the waves. 

Sperm Whale Tailing, Abaco, Bahamas (©BMMRO)

A juvenile takes a dive alongside an adult. One day that tail will be massive…Sperm Whale Tailing, Abaco, Bahamas (©BMMRO)

Credits: all photos © BMMRO, with thanks as ever to Diane and Charlotte

Sperm Whale Tailing, Abaco, Bahamas (©BMMRO)

SPERM WHALES GATHERING IN ABACO WATERS


Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen)

SPERM WHALES GATHERING IN ABACO WATERS

During the past week, the BMMRO research boat has been tracking sperm whales off the south coast of Abaco. These huge creatures are the largest marine mammals found in Bahamian waters, and the area between Rocky Point around the south coast to Hole-in-the Wall is a great place to find them. 

Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen)Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen)

One reason they are found in this particular area is the existence of the Great Bahama Canyon, one of the deepest submarine canyons in the world. The depth of the canyon ensures that the waters are nutrient-rich, with food being drawn up from the depths towards the surface. In season it’s the perfect place for female sperm whales and their calves.

Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen)Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen)

The BMMRO research trip encountered more than a dozen sperm whales, mostly females with their calves. And the amazing thing is that the sightings are often made within sight of land. In these photos, the are two landmarks visible. One is the huge Disney vessel parked at Gorda Cay aka Castaway Cay (header image); the other is HOLE-IN-THE-WALL LIGHTHOUSE (above)

Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen) Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen)

Credits: All photos BMMRO 2018, with thanks to Diane & Charlotte as ever

Sperm Whales, Abaco Bahamas (BMMRO / Keith Salvesen)

SPERM WHALES – BMMRO FIELD TRIP, BAHAMAS


Sperm Whales, Bahamas (BMMRO)

SPERM WHALES – BMMRO FIELD TRIP, BAHAMAS

I can never quite get my head around the fact that the waters around Abaco are home to the twin leviathans, sperm whales and humpback whales. And before anyone points it out, I realise they can’t actually be twins: sperms whales (cachelots) are TOOTHED WHALES whereas humpback whales are BALEEN WHALES

Sperm Whales, Bahamas (BMMRO)

During November, the Bahamas Marine Mammal Research Organisation (BMMRO) undertook a rather special field trip. Using sophisticated devices, the scientists first located a group of sperm whales, and then tracked them through the night using the communications between the creatures – ‘vocalisations’ – to follow them. Later analysis of the recordings will have made it possible to identify the individuals through their unique vocal patterns – and so to recognise them again. 

Sperm Whale, Bahamas (BMMRO)

The hydrophonic equipment used is extremely sensitive, and can pick up the sounds made by whales and dolphins over a great distance. The box of tricks looks deceptively modest – I took these photos on a previous trip when we were looking for beaked whales and dolphins. Charlotte Dunn holds the microphone submerged on a cable and underwater sounds are amplified so that the slightest chirrup of a dolphin can be heard by everyone on the vessel. The sounds are recorded and locations carefully logged.

Besides the sperm whales, the BMMRO team also had sightings of spotted dolphins, bottlenose dolphins and beaked whales during the field trip. These bonus sightings will also have been logged for future reference. It all adds to the detailed research data that assists the conservation of the prolific marine mammal life in Bahamian waters.

Atlantic Spotted DolphinsAtlantic Spotted Dolphins, Bahamas (BMMRO)

By the time one of the whales decided to breach, it was some distance away, so I’m afraid I can’t bring you a dramatic close-up from the trip. But just to see this view at all is breathtaking.

All photos BMMRO except the 2 hydrophone ones on the research boat (Keith Salvesen)