Tiger shark at The Boiler, San Benedicto Island

Anyways, the visibility this morning 80ft plus and our divers had some great hammerhead, silvertip and galapagos shark sightings. Plus good old Lumpy, our tame leather bass with the broken jaw was there as always. I was very tempted to stay for another dive but flexibility is the name of this game and our guests wanted to move on to the Boiler on the west side of San Benedicto Island.

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Gentle headsea from San Benedicto Island to Cabo San Lucas

They had a great trip to the Revillagigedo Islands (Socorro Island), with lots of giant manta ray sightings and behaviour, some pretty darn good sharking (including our first-ever sighting of 100 plus schooling juvenile silvertip sharks) and good humpback whale behaviour.

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World class diving at Roca Partida with sharks and mantas

Just to top things off, four giant manta rays came into to the rock and spent “quality time” with our divers, gliding by close enough to touch. Interestingly, there were very few silky sharks, and divemasters Sten, Tricia and A.J. speculate that the silkies may have been intimidated by all the other sharks. Diving the Revillagigedos (Socorro Island) is not always hot but man, when it’s on, it is RED HOT DIVING!!

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Tail lobs and competitive humpback whale behaviour

A group of guests also went out in a skiff to get a closer look at four adult humpback whales and one juvenile and were rewarded with 15 minutes of dramatic tail lobs (smacking their tails on the ocean surface). While tail lobs can be a “back off” message directed at humans, or a “let’s get together guys and stay close,” it seemed much more likely that there was some male to male competitive behaviour going on here. ‘Tis the season at Socorro Island for humpback whales to mate and breed!!

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Friendly giant manta ray interaction with divers

The west side of Socorro Island has beautiful rolling hills with low green vegetation that is gradually turning brown as the residual moisture from last summer’s hurricane season drys up. Divers lucked out with a large and very friendly giant manta ray that stuck with them for a great interaction during one dive. Humpback whales were all around and spent their day breaching, fluking and singing whale songs that could be heard underwater.

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One giant manta ray cruising by divers

The outer cleaning station (one of our favourite dives at Socorro Island, first recommended to us by cinematographer Bob Cranston) had very good dive conditions with calm seas and mild current, five scalloped hammerhead sharks and one Galapagos shark. One giant manta ray cruising by didn’t seem interested in interacting with the divers. And, of course, the ever-present silky sharks shadowed the divers, curious but not aggressive.

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Amazingly loud humpback whale song

Captain Dave reports that humpback whales were singing so loudly today that guests could hear the song inside the lower deck staterooms on the Nautilus Explorer!!! It was quite something for our guests while on their dive. In-water visibility was down on the east side of Socorro Island, with lots of phytoplankton in the water column. While this made it hard to spot big pelagic animals off the outer cleaning station at Cabo Pearce, the guests were rewarded with a great show of feeding behaviour by the giant manta rays. 

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