Bycatch Loggerhead Satellite Tagged


2/13/2025

Turtles 581 and 583 continue to transmit after 39 days at sea.  581 has followed the meandering Kuroshio current to the north while 583 has broken out of the Kuroshio current and headed to the south.  Both remain in waters that are 19 to 22 degrees C.

Turtles 581 and 583 are following a similar path moving along the main Kuroshio currents.
Above are tracks for turtles 581 and 583 up through 1/24/2025 on the general current pattern off of the coast of Japan.



Below is a chart showing the track and locations of turtles 571, 580, 581 & 583 since their release.  This map is automatically updated daily.

  

1/6/2025

Tomomi Saito and his research team from Usa Marine 'Biological Institute, Kochi University have release 2 more loggerheads captured as by-catch at Moroto Point in Japan.  


About noon of 06 Jan. 2025, released them off Tosa Bay (33°13'00.0"N 133°40'00.0"E). 


13/12/2024 Bycatch at Shiina Fishing Port, Muroto-shi, Kochi Pref.
SCL: 82.7 cm, SCW: 67.0 cm, BM: 78.5 kg
Left forelimb tag: JP30791-A, left hindlimb tag: JP40193-A 
PTT Transmitter ID: 265581
PIT Tag ID: 392145000262151


27/12/2024 Bycatch at Shiina Fishing Port, Muroto-shi, Kochi Pref.
SCL: 73.1 cm, SCW: 59.8 cm, BM: 55.5 kg
Left hindlimb tag: JP40196-A
PTT Transmitter ID: 265583

PIT Tag ID: 392145000261239

1/2/2025

Below is a short clip of the location of turtle 580 as of Jan 2, 2025.


12/31/2024

Below is a short clip of the location of turtle 580 on New Year's Eve.



12/28/2024









12/19/2024


Turtle number 580 has become entrained in the easterly flow of the Kuroshio Current and is moving southeasterly in waters that are 21-23 degrees C.  Below is an animation of the current flow that 580 is currently in.




12/13/2024

Turtle 580 continues to move to the southeast in waters that are approximately 22 degrees C.  Based on the track for the couple of days, 580 may have found an area where there is some forage items.. it is wandering in a localized area.

Above is a chart of 580's track since release showing that 580 may have found some forage as it is remaining in a small area.


12/08/2024

Dr. Tomomi Saito and his team from the Usa Marine Biological Institute, Kochi University have tagged and released a sub-adult loggerhead turtle that was caught by fishermen at Shiina Fishing Port.  The turtle was healthy and in good condition as it was released off of a fishing boat in Usa Bay.  Below are the specifics and biometrics for the turtle.

Congratulations to the Usa Research Team!

Information about turtle 580.

6/12/2024 Bycatch at Shiina Fishing Port, Muroto-shi, Kochi Pref.
SCL: 70.1 cm, SCW: 57.7 cm, BM: 54.5 kg
Left forelimb tag: JP40191A, left hindlimb tag: JP40192A 
PTT Transmitter ID: 265580 
PIT Tag ID: 392145000261749

 

Turtle 580's track post release on 12/08/2024. Map is updated daily.



 Satellite tag is attached and protected on the front by a "bumper".


Turtle 580 is ready for release and is about to go over the side of the fishing vessel.

Waving goodby and wishing good luck to 580!






Comments

Post a Comment

Popular posts from this blog

Post Nesting Loggerhead Turtle Tagged and Released

Image
  AUGUST 8, 2024 POST NESTING LOGGERHEAD SATELLITE TAGGED  KOCHI BEACH, JAPAN The post-nesting loggerhead is now meandering around an area that appears to be very favorable for her. Loggerhead turtle 571 has begun to remain in the same vacinity which indicates that she has found an area that provides a bountiful foraging area. 571 has moved a little off shore and may be moving out into the Kuroshio current.  Stay turned to see where she goes! Above is an image of loggerhead #571 nesting on Kochi Beach taken by Noah Yamaguchi with a drone mounted IR camera at 0200 hours on August 6,2024.  A team from Usa Marine Biological Institute was able to capture her after she finished laying eggs. 571's eggs (110 in number) were retrieved and placed in the protected hatchery on Kochi Beach.  If these eggs hatch successfully, they will constitute the fourth cohort of STRETCH turtles scheduled for release in 2026!   Post nesting loggerhead turtle #571's locations an...
Read more

DAILY UPDATES ON COHORT II LOGGERHEAD TURTLES

Image
Noah and Catherine are the STRETCH representatives taking care of the 28 juvenile loggerhead turtles in cohort II of the STRETCH experiment.  They will be providing daily updates on the status of the turtles as they make their way across the Pacific to the area where they will be released into the central northeast Pacific Ocean.   The location of release will be as close as possible to where cohort I was released (~39 N and 146 W) , Noah and Catherine in their STRETCH T shirts during "loading day" when they loaded the 28 satellite tagged juvenile loggerheads on-board the Firmament Ace at the Port of Nagoya. Graphic of ships location and sea surface temperature. The latest update will be at the top of this post 7/8/2024 Twenty Eight Loggerheads were safely released from the Firmament Ace between 1410 and 1445 h (UTC-11) at  39°33.4669' N 148°29.7291' W.  The sea surface temperature was  18℃. See Pictures below of Catherine, Noah and the turtles.   As of now...
Read more