Calvin Beale

DIVE OF A LIFETIME - MOBULA RAYS HUNT HUGE BAITBALL IN RAJA AMPAT

Banner photo by Calvin Beale

Location: Sagof, Raja Ampat
Getting there: 45 minute by speedboat ride
Depth: 4 – 40+ m on the walls
Visibility: 20+ m, when you can see through the anchovies

Without a doubt the most action filled dive I’ve had in years. When I heard that a baitball of anchovies had been seen at Sagof, 45 minutes from Misool Eco Resort,  we headed up there the next morning with a couple of tanks. When  I first jumped in to check the current, to my disappointment, there were no anchovies to be seen. I decided to check the other side of the site, just in case...

Putting my face in the water, I immediately saw 6 Mobulas just metres beneath me shooting through a gigantic baitball of anchovies. I jumped back onto the boat and told everyone  to prepare for the best dive of their lives. In the water we descended into blackness, the sun being blocked out by the rolling waves of thousands upon thousands of tiny fish above us.
Through the fish we caught  glimpses of Devils, the Long-Horned Pygmy Mobula Ray (Mobula eregoodootenkee) swimming in formation, pushing the anchovies up and against the reef that we ourselves could barely see. They swept past in fleets of six or 10, constantly changing direction. As they approached  the  schooling fish, three or four would peel off and penetrate the  bait ball with jet-like acceleration, pulling the fish into their mouth with the help of their cephalic fins.



Calvin Beale
This went on for some time - the mobulas taking mouthful after mouthful of fish without making a dent in  the shifting black cloud. Suddenly the jacks arrived in their  hundreds, hammering the hapless anchovies. Tiny flecks of scale drifted down like glitter after each passing wave, as the jacks ravaged their way across the reef, leaving a trail of destruction in their wake. The thunderous sound of hundreds of hunting jacks isn’t something you quickly forget…

We made our second dive at the same site and as we expected, encountered lots of ambush predators: Tassled Wobbegong sharks, Scorpionfish, Lionfish and lots of big grouper, all happily helping to ‘clear’ the water off the pesky anchovies. The reef itself is always spectacular to dive,  with walls and outcropping ridges covered in vibrant soft corals and huge sea fans. But the spectacular backdrop was forgotten in the face of this incredible hydrodynamic display of the hunting mobula rays.

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