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Old 12-11-2016, 11:33 AM   #1
ROBERTO REYES
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Shark ID help Please.

https://www.facebook.com/tionegro.cr...5353091555050/

This was found in our shore waters, its hard to tell , we thought it was a Thresher shark at first,not common here, then Basking Shark which is very very rare.

Any real shark experts here, no jokes please. Looms like its one of a kind for us.
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Old 12-11-2016, 11:55 AM   #2
ROBERTO REYES
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Re: Shark ID help Please.

https://www.facebook.com/tionegro.cr...5360961554263/

IT WAS TAKEN OFFSHORE AND RELEASED,
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Old 12-11-2016, 11:56 PM   #3
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Re: Shark ID help Please.

Wish someone had taken a shot of the head; that would have cleared it up pretty easily. Hard to tell from what's posted, but the two most likely options seem to be a basking shark or a megamouth. Megamouth would be a really interesting find.
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Old 12-13-2016, 11:48 AM   #4
dinogj
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Re: Shark ID help Please.

I volunteer for a childhood shark education/ conservation group and after showing these pictures to a few colleagues the consensus is that it is probably a small basking shark. Would you happen to have any more information about where this accidental capture/ release may have happened?
There are currently several studies on these very rare sharks and NOAA will be interested in this data.
To report a sighting please provide the date, time and location of the sighting at either:
(858) 334-2884 (Southern California) or (831) 771-4438 (Central California, North of Morro Bay). Or you can also email them at baskingshark@mlml.calstate.edu Photos or video are very appreciated!

A possible confirmed sighting in the Caribbean would be exciting to say the least, especially off Puerto Rico.
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Old 12-13-2016, 11:20 PM   #5
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Re: Shark ID help Please.

I'm putting my chips on it being a megamouth; I spoke to a former professor last night (who assisted with the first acoustic tracking of a megamouth off Southern California) who said the pectoral and tail were a match. He concurred that a clear shot of the head would have settled the matter: https://en.wikipedia.org/wiki/Megamouth_shark

In the photos the head looks blunt; basking sharks have a pointed nose (on occasion they are mistaken for large white sharks from the air). The gills are also relatively small; on a basking shark they almost circle the entire throat: http://www.elasmodiver.com/Basking%20shark.htm

From the Facebook page it looks like it was found dead and the body was towed out to sea; if it was dead that's unfortunate. As of January 2015 there were only 61 megamouth specimens caught or sighted worldwide on record. Only two of those were from the Atlantic, both in Brazilian waters.

Last edited by LionfishStabber; 12-13-2016 at 11:34 PM.
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