Saturday, November 09, 2019

Amazing Manta Ray!

Amazing indeed - enjoy!


Tuesday, November 05, 2019

Heinous Robbery - Video!


Watch - story here!
And would that scene at 2:15 qualify as a true Shark selfie?



The perpetrator is a pesky and so far unnamed little guy.
Suggestions welcome - or better yet, officially name him yourself once we identify good permanent markers and Tashi puts him up for naming!

Anyway, it was epic.
Bravo, and a huge Vinaka Vakalevu to Silio for having retrieved the rig - and a big tip o' the hat to  Tovatec for their venerable but utterly phenomenal Galaxy 2500s that survived the ordeal completely unscathed! 

Enjoy!
 

Monday, November 04, 2019

Mating Mantas - Video!

Source.

Wow - with an extra helping of WOWZA!
Story here.



And since it's so awesome, here's some more Manta hanky panky for good measure!
Enjoy!



Thank you Serena!

Sunday, November 03, 2019

Manta molesting - Videos!

Source.

Whoops.
Watch = click here or on post below!



The question being, who is molesting whom!
May this be some defensive maneuver, or is the Manta simply having fun like they often appear to do?

Questions questions!
And lest you thought this is strictly a one-off: here's another one from 4 years ago - story here!



Anyway, enjoy!

Thursday, October 31, 2019

Idiots and OWTs - Video!


Watch.



Oh well.
Looks like that attack a while ago has led to zero reflection - and why am I not surprised to find the name of the pagliaccio in that pathetic lineup of Shark molesting morons!

And the comments by Shark Education?
Well yes, maybe. But then again, if this is supposed to be tourism as opposed to some private adventure, then the operators need to approach those dives completely differently and bloody keep the clients in check and suitably protected - and yes it is possible to dive safely and responsibly with OWTs like amply demonstrated by GSD member Epic Diving

And no, no need to elaborate.
Re read this and if you really got too much time, this - it sure ain't rocket science!
And if the industry doesn't bloody self regulate...

And so it goes.
Let's go Shark diving - sustainably!

PS - Indeed, the OWT populations are among the most depleted, and these shenanigans can easily lead to further persecution. Bravo Sergio, condivido al 100%! 
 

Tuesday, October 29, 2019

GWS Clans at the Neptune Islands - Paper!


Very interesting!

Check this out.
Press release here, stories e.g. here and here.
In brief and assuming I understand this correctly, those GWS don't turn up randomly but appear to favor (and hence possibly travel with) determined buddies and even form distinct groups that appear to persist for years. Nice to see Johann, Charlie and Andrew among the authors, and kudos to GSD member Rodney Fox Shark Expeditions for having enabled yet another stellar paper - and incidentally, congrats for the great new boat

And here in Fiji?

Remember Mike's totally speculative hypothesis?
That was obviously several years ago, and today we know quite a bit more. Specifically, we have learned that although our dive has minor local impacts, effects at the ecosystem level remain negligible as our Bulls continue to roam and do neither get conditioned to coming ever more frequently, let alone residing here or changing their migrations or mating cycles, etc; nor do they in any way become dependent on our handouts - tho I was certainly wrong when speculating about the nutritional value of the Tuna heads! But be it as it may, the restaurant analogy remains fully confirmed.

And the part about the Bulls likely being solitary?
I still believe that in the case of those large reef-dwelling Sharks, and barring any cooperative hunting for which we have zero evidence, evolution would have selected against traveling with, and thus having to compete and/or possibly even share meals with conspecifics.

But then again, who am I to say.
I can't divulge too much - but I can say that 10 years after that post, we are finally about to reveal some conclusive evidence!
Fiji Time anybody? You betcha! :)

So keep watching this space.
To be continued!

Fiji Airways Trailer!

Hunter and Predator at he SRMR - click for amazing detail!

Watch.



Yup that would be our boats.
More details to follow as this hopefully develops into a finished product.
 
Or not - as always, we shall see!
Anyway, enjoy!

Sunday, October 27, 2019

Gaping GWS - Video!

This Shark is spy hopping - but it sure looks like RAG is not at all rare in SA!

Watch.



And I cite.
Repetitive Aerial Gaping: A Thwart-Induced Behavior in White Sharks 
WESLEY R. STRONG JR., in Great White Sharks, 1996

Causation

Baits pulled away travelled horizontally, just beneath the surface until they came against the hull at which point the sharks generally turned away. In the vertical baiting configuration, however, the bait could be hoisted directly out of the water as a shark tried to seize it, moving it out of reach more quickly than a bait drawn horizontally. This distinction is important, because 11 of 15 (73%) RAG occurrences were elicited while using the vertical baiting technique, but the technique itself was employed less than 5% of the time.

In each case, RAG followed a series of failed attempts to seize a bait and was immediately preceded by an open-mouthed lunge and miss as a bait was withdrawn. Lack of contact with prey after the feeding MAP was initiated appears to play a role in triggering RAG, but does not solely explain its onset. One factor common to each observation of RAG was that a portion of the anterior buccal cavity was exposed to air before (i.e., during the surface lunge) and during its execution. While failure to obtain food while submerged may eventually evoke a similar response, we never observed an underwater bout of RAG during more than 135 hours of underwater observation. Thus, it appears that contact with air is required to initiate the response.
Now you know - also described e.g. herein, and here.
Story here.

You're welcome!