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Whale Watching, Dolphin Swimming and Scuba Diving in the Azores

Sea turtles

clock July 20, 2010 09:28 by author Justin Hart

Our trips to sea are not just to see whales and dolphins they are also trips into the open ocean where we seek other pelagic marine life of interest. Often we encounter sea turtles, especially Loggerhead turtles Caretta caretta but very occasionally Leatherback turtles Dermochelys coriacea too. Both these species are pelagic. Once they have hatched and left their nesting beaches they spend the rest of their lives at sea. Only the females will return to land to lay their eggs, often on the very same beachwhere they were hatched. 

A Leatherback turtle surfaces close to a whale watching boat. 

Leatherbacks are the largest turtles, most are between 1-2m long but some grow to 3m and these can weigh up to 960kg. Of the sea turtles they occur inthe coolest waters (to 4.5 °C), they also dive the deepest (a depth of 1200m has been recorded) and swim the fastest (one was recorded swimming at 22mph!). They feed predominantly on jellyfish and lack a bony carapace like the other sea turtles. Little is known about their social and breeding behaviour at sea. Most of the Atlantic population hatch from breeding beaches in Suriname, French Guiana, Trinidad and Tobago, the Caribbean and Gabon. The females lay up to 9 clutches per season and are not always faithful to the same beach. Each clutch can comprise 110 eggs. Here in the Azores they are always seen alone (not including their usual entourage of pilot fish) and offshore in deep water.

This year on 6thJuly, south of Pico we encountered one Leatherback turtle that behaved very strangely. It repeatedly spun, rolled and inverted itself on the surface, flipper slapping like a Humpback whale. Eventually it dived away as normal but I have no idea what caused this behaviour.

 

Three photos illustrating some strange surface behaviour shown by a Leatherback turtle during a recent encounter. 

Loggerhead turtles are the second largest species of turtle. The largest can measure around 2m long. Most weigh between 80-200kg but the heaviest recorded was 545kg. They prefer warmer waters than the Leatherbacks(13°C– 28°C) but also feed on jellyfish. We sometimes see them feeding on the Portuguese man-o-war Physalia physalis. Most of the Atlantic population hatch from nesting beaches located between Virginia on the east coast of North America to Brazil in South America.  Some, however, also come from the Cape Verde islands in the east Atlantic. Females lay on average 4 clutches of eggs per season.

 

The distinctive prefrontal scales on the head of this turtle help to identify it as a Loggerhead turtle. 

Once at sea the Loggerhead turtles drift around the Sargasso sea current and can be encountered around the Azores at any time of year. We see both young and old Loggerheads,sometimes close to land, even during shore dives. They typically range in size from around 25cm to nearly 100cm long. Interestingly the carapace of the young turtles have distinctive serrations (perhaps to protect them from predation).

 

Portuguese man-o-war are a favourite food.

The serrations on the back of this young Loggerhead turtle may deter predators. 

 

 

 

 

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Jonathan and Caroline at Princess Alice (in French)

clock December 5, 2009 21:28 by author Dania

Manta and diverNous avons plongé aux 4 coins du monde et Princess Alice fait partie des plongées les plus inoubliables et se trouve dans notre top 5 !!!!
C’est un site de plongée idéal pour les amoureux de la vie sauvage et pour ceux qui aiment  l'aventure ;-)

Plonger dans le grand bleu dans une eau limpide avec 14 raies manta  était tout simplement extraordinaire, magique  et d’une telle intensité !!! 
En plus des raies, le site est génial.  Nous  avons débuté la plongée en faisant une pointe à +- 40 m pour atteindre le sommet de la montagne sous-marine où nous avons observé des murènes géantes. Ensuite nous sommes remonté le long d’une corde où les raies manta nous attendaient.  Le fait de voir les raies tourner autour de nous était unique, il y avait comme un échange entre elles et nous. En plus de la plongée, sur le trajet en bateau nous avons eu la chance de rencontrer un banc de sardines en train de se faire chasser par les oiseaux, les dauphins et un requin bleu.

On remercie l’équipage qui nous a permis de faire  du snorkelling pour observer la scène. On se croyait dans un documentaire animalier !! Nous en avons encore des frissons rien que d’y repenser.
Encore un grand merci à tout le staff du centre de plongée CW Azores et plus particulièrement à Enrico et Dania  pour leur gentillesse hors du commun ;-)

Jonathan et Caroline
(Belgique) 

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Diving Baixa do Sul

clock May 18, 2009 05:47 by author Justin Hart

Baixa do Sul is a submerged pinnacle lying in the Canal do Faial (the narrow strip of water that separates Pico from Faial). This baixa rises from deep water to just 7m from the surface (at low tide) and is one of our best dive sites. 

Moray eel

The pinnacle itself supports a diverse range of benthic marine life including black corals at shallow depths rarely seen elsewhere, beautiful polycerid nudibranchs, huge rockfish and several species of moray eels

Polycerid nudibranchs
Polycerid nudibranchs

Hermit crab
Hermit crab

The site is also a great place to encounter hunting barracuda and pelagic fish such as tunas and jacks. Upwellings from the deep can also bring some surprises such this shoal of boarfish (see below, photo courtesy of Maurizio Caddia). 

BoarfishBoarfish
Boarfish (Photo courtesy of Maurizio Caddia)

This species is not supposed to seen shallower than 40m. This morning, however, we found a large shoal  under attack from Pompano fish and forming a defensive ball.
At one point the shoal was so close to the surface that some Cory's shearwaters were able to dive from the surface and catch a few – incredible. 

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Join us for an unforgettable holiday!

The Azores are one of the very top destinations in the world for whale watching and swimming with the dolphins.
The archipelago is the second best group of islands in the world for sustainable tourism, according to National Geographic Traveller.

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