Humpback Whales In Mexico

Two different encounters with humpback whales (Megaptera novaeangliae) during our Mexican holiday make up this post. The first experience was breaching humpbacks while in Cabo San Lucas (Baja California Sur) on the Pacific Ocean side. We followed three whales for about an hour and only had them break the surface to breathe. Shortly after this, they got more active and for about 5 minutes and they breached a number of times.humpback2humpback3humpback1

We have over 500 dives and have never encountered humpback whales underwater. In Hawaii, we have heard the males singing during our dives but they always seem to avoid us. All that changed in the Socorro islands (Revillagigedo Archipelago). We had a very brief encounter (about 10 -15 seconds) with a mother and her calf. They were moving toward us but immediately turned away to avoid us, but this allowed for a couple of quick photographs. This was a very surreal experience to see a 13-15 meter (40-50 foot) whale and calf such a short distance from us!humpback8

Galapagos Sharks In The Revillagigedo Archipelago

Our previous posts on the Revillagigedo Archipelago, also called the Socorro islands, have included the giant mantas(Manta birostris), whitetip reef sharks(Triaenodon obesus), and silky sharks (Carcharhinus falciformis). Although Galapagos sharks (Carcharhinus galapagensis) are fairly common especially at Roca Partida, we did not have any encounters with them there. However, on one dive we did come across a few juveniles at Socorro island and this gave us an opportunity to photograph this species.galap2galap3

Older sharks of all species have very scarred bodies which are simply a result of surviving in a dangerous ocean environment. However, these juvenile Galapagos sharks, which were about a meter (2-3 feet) in length, had skin with very few blemishes. Adult Galapagos sharks can reach 3 meters (9-10 feet) in length.

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Silky Sharks Of The Socorro Islands

The silky shark (Carcharhinus falciformis) gets its name from the smooth texture and silky look of its skin especially when it is young. These sharks can grow to 2.5 meters (8 feet) in length and are very abundant in the Revillagigedo Archipelago. Generally referred to as the Socorro Islands, these volcanic islands lie approximately 390 kilometers (240 miles) off the coast of Cabo San Lucas in Mexico.silky2silky4

Although we encountered scalloped hammerheads, tigers, Galapagos, whitetip reef, and silvertip sharks the most numerous were the silky sharks. At dusk, as the sun was setting, a few of us slipped into the water behind the boat in an attempt to photograph these sharks with the sun’s rays penetrating behind them to give a visually stunning look. Thank you to Andy Murch of Big Fish Expeditions for showing us this technique as we are relatively new to underwater photography.

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Giant Mantas of San Benedicto Island

The focus of our trip was to photograph the giant mantas (Manta birostris) at San Benedicto Island in the Revillagigedo Archipelago. These are the largest mantas in the world and can be more than 20 feet (6 meters) across and weigh up to 3,500 pounds (1600 kilograms). The dive site called “the Boiler” is a cleaning station for these mantas where fish remove parasites from their bodies. Consequently, this site provides the best opportunities to see and photograph these gentle giants.

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Giant manta with two remoras attached. San Benedicto Island, Mexico.

The Revillagigedo Archipelago lies approximately 390 kilometers (240 miles) off the coast of Cabo San Lucas in Mexico. These Pacific islands are more commonly referred to as the Socorro Islands. Aboard the Southern Sport, we dove 3 of the 4 islands (Roca Partida, San Benedicto, and Socorro).

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“The Boiler” has the best encounters in the Revillagigedo Archipelago, Mexico.

A color variant from the more common black and white manta is an all black or nearly all black manta. It is not a different species of Manta birostris. However, it is exciting when one showed up as it looks so different.

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The “black manta” is a color variant of the Manta birostris. Pacific ocean, Mexico.
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Both color variants are shown here. San Benedicto Island, Mexico.

San Benedicto is the island for the giant mantas. They are used to divers and show no fear of people. They swim It seems a bit surreal, even a few weeks after our encounter with them, to have had huge mantas swim within a few meters of us. 

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What do they think of us when we look into each other’s eyes? “The Boiler”, Mexico.
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Pair of mantas (Manta birostris) at San Benedicto island, Pacific ocean, Mexico.
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“The Boiler” at San Benedicto Island, in the Revillagigedo Archipelago, Mexico.

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Whitetip Reef Sharks: Socorro Islands

The Revillagigedo Archipelago lies approximately 390 kilometers (240 miles) off the coast of Cabo San Lucas in Mexico. These Pacific islands are more commonly referred to as the Socorro islands. Aboard the Southern Sport, we dove 3 of the 4 islands (Roca Partida, San Benedicto, and Socorro). The whitetip reef shark (Triaenodon obesus) is common here.

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Whitetip Reef Shark Swimming At El Canyon Dive Site At San Benedicto Island
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Male Whitetip Reef Shark. The Reproductive Claspers Are On The Bottom

The whitetip reef shark rarely exceeds 1.6 meters (5 feet). It is nocturnal and rests during the day under ledges and caves.  At Roca Partida, we observed many groups of whitetip reef sharks congregating in groups of 3 to 15 on the ledges. By approaching them slowly we were able to capture this behavior.

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Group Of Five Whitetip Reef Sharks On Ledge At Roca Partida

 

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Group Photos Are Possible By Approaching These Sharks Slowly

 

These sharks hunt at night and eat mainly crustaceans like crabs, lobsters, and shrimp as well as bony fishes. They tend to hunt in groups. During the day, it was interesting to observe many large lobsters out in the open just a few feet away from the whitetip reef sharks. Apparently, the lobsters know that they are safe from these sharks during the day.

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If Disturbed Whitetip Reef Sharks Swim A Short Distance And Return To Their Ledge.
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Pregnant Female Cruising Over The Volcanic Island Known As Roca Partida.

 

Grey Whales In Magdelena Bay, Baja California Sur, Mexico.

The blue whales in the Sea of Cortez (see the previous post) was a neat experience but the grey whale encounters on the Pacific side of the Baja Penisula were breathtaking. Often female grey whales with calves will come up alongside the boat and occasionally let you touch and rub them. This is the experience we had. Grey whales can reach 15 metres (50 feet), weigh about 35 tonnes (75,000 pounds) and live approximately 60 years.

 

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This Grey Whale Calf, About 2-3 Weeks Old, Stays Very Close To Its Mother In The Bay At Adolfo Lopez Mateos, Mexico.
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Playful Grey Whale Calves Often Come Next To The Boats At Magdelena Bay, Mexico.
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Each Day The Mother Grey Whale Exercises Her Calf To Build Up Its Strength For The Long Journey North In Just A Few Months. Baja California Sur, Mexico.

Each winter the whales migrate from Canada and Alaska south to The Baja Peninsula traveling up to 11,000 kilometres. There are a number of bays and lagoons along the Pacific (western side) where the pregnant mothers deliver their babies. At birth, the calves are about 4 meters (13 feet) long and weigh approximately 800 kg (1,764 pounds)! The babies are often playful and occasionally bring their heads out of the water making interesting photographs.

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This Grey Whale Calf is Only 2-3 Weeks Old And Is Curious At Adolfo Lopez Mateos.
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The Mothers Allow The Calves To Come Next To The Boats. Baja California Sur.
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Grey Whale Calf Leaning On Mom. Notice The Blowhole & Barnacles. Magdelena Bay.
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Not Sure How Well A Grey Whale Calf Can See Above Water. Adolfo Lopez Mateos.
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What Is This Grey Whale Calf Thinking As It Looks At Us? Magdelena Bay, Mexico.

We were hoping to get some good underwater shots with our underwater cameras to get a different perspective of them as most people see then only from the surface. The water, however, is very green filled with phytoplankton and visibility was maybe 10 feet. Therefore, it proved difficult to get any good photographs but we have included a few to give a different perspective.

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Mother Grey Whale Lifting Calf To Surface, Baja California Sur, Mexico
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Playful Grey Whale Calf Next To Its Enormous Mother At Adolfo Lopez Mateos, Mexico

 

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Grey Whale Calf Approaching Our Boat At Magdelena Bay, Mexico

If someone is wanting a wonderful whale experience for themselves or for their family then we would highly recommend the grey whales at the fishing town of Adolfo Lopez Mateos, Magdelena Bay, Baja California Sur, Mexico. We were there towards the end of February.

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Occasionally, The Tail Will Break The Surface As The Grey Whale Begins Its Descent.
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Another Grey Whale Beginning Its Descent In Magdelena Bay, Mexico
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After Descending The Adult Grey Whale Can Remain Submerged For 10-15 Minutes But The Calves Must Surface More Often. Magdelena Bay, Mexico.
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Barnacles Growing On the Skin Of A Grey Whale. Magdelena Bay, Mexico.
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The Blowhole On The Top Is How The Grey Whale Breathes. Baja California Sur.

 

Blue Whales In The Sea Of Cortez, Baja California Sur, Mexico

Blue whales (Balaenoptera musculus) are the largest whales in the world reaching lengths approaching 30 metres (100 feet) and weighs up to 180 tonnes (400,000 pounds). They start arriving in the Loreto Bay National Marine Park, Mexico in February each year. There seems to be a sweet spot called the blue triangle where they are regularly seen. Danzante Island, Del Carmen Island and Monserrate Island make up this blue triangle in the Sea of Cortez. Some whales like humpbacks with their spectacular breaches, or grey whales that come next to your boat are more photogenic. However, blue whales just break the surface of the water to exhale, take in more air and descend.

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Blue Whale In Loreto Bay National Marine Park, Sea Of Cortez, Mexico
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Upon Surfacing The Blue Whale Exhales Air From Its Blowhole Creating A Large Waterspout

On our way to our dive site, we saw some large waterspouts caused by the exhaling blue whales off in the distance so a detour was in order. Marine park rules dictate that you keep your boat a specific distance away from the whales. The way it works is that you see the blue whale in the distance, you move the boat towards them but by then they have descended again. The boat captain guesses where he thinks they will come back up (usually 6-9 minutes later) hoping they will surface closer to the boat. We played this game about 8 times and each time they came up a long distance from the boat. Great experience but now it was time to go to our dive site so off we went. Unexpectedly, the whale surfaced about 30-40 metres (100-130 feet) away from the boat which was close enough to get these photographs!

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Blue Whale Blowhole Close-up Just After Exhaling, Sea of Cortez, Mexico
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Blue Whale Beginning Its Decent After Taking In More Air, Loreto Bay National Marine Park
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Descending Blue Whale Showing Small Dorsal Fin, Sea Of Cortez, Mexico