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Archive for the ‘RJ36’ Category

Field Report: Summer

2017 pups are all weaned and tagged!

Monk Seal Pup RJ22-2All weaned pups this year are males (all three last year were females, born to the same moms at same locations!). RK30’s pup born along the Na Pali coast, is a nice big healthy weaner, now known as RJ36 (tagged J36/J37). We are grateful to Captain Tara Leota and Kauai Sea Riders for assistance to monitor and deliver the Kauai team to tag this pup.

RK22 weaned her pup RJ22 (tagged J22/J23) on the northeast coast and was found one morning entangled in in monofilament fishing line. Fortunately, while we were monitoring,  he was able to free himself from the fishing line. This demonstrates why it is so important to check the seals regularly–and to pick up marine debris whenever possible.

The last pup to wean, was RO28’s pup now known as RJ28 (tagged J28/J29). This pup remains on his natal beach while RJ22 has already started exploring more of the coast, moving south.

Seals of Concern Updates

20170725,Fuji,RH92(Miyashiro)-molt

Photo credit: Miyashiro.

RH92, juvenile female was translocated from Kapaa to PMRF in March. We are pleased to report that even though she returned to the Fuji Beach area she is no longer logging nor feeding on fish scraps in the canal. She continues to forage normally along the east coast and just finished her first molt.

Another yearling female, RH38, is getting ready to molt along the north shore, and we are monitoring her closely as her weight is low.

Unusual hook discovery

20170704,Poipu,UAM(JDT)

Photo credit: Thomton 

An unknown, untagged, clean adult male seal showed up on the south shore with a large J-hook stuck in his back. A second J-hook was attached with a metal leader and there was 17 feet of very heavy (400 lb) monofilament trailing. Coordinators were able to cut away all of monofilament and the dangling second hook.

20170704,Poipu,UAM(JDT)a

Photo credit: Thomton

The remaining hook embedded in the skin is non-life threatening and will eventually come out on its own, however we will closely monitor this seal and intervene if necessary. Fishermen have informed us that the gear that hooked the seal is used to catch marlin by trolling behind a fast moving boat.

Meanwhile, in Waikiki

One of Kauai’s longtime breeding females, RH58 or “Rocky,” pupped on at Kaimana Beach in Waikiki on Oahu–and instantly became the darling of beachgoers. The mom and pup, a female, provided NOAA staff and volunteers with additional concern when they swam inside the Natatorium by way of an opening in its crumbling seawall. Eventually, once RH58 weaned her fat and healthy pup, the pup was relocated to a more remote location for her safety. As we’ve discussed here many times, young seals are most vulnerable right after weaning. This is a time they spend exploring their natal beach, learning what’s edible and what isn’t. At this age, they are quite curious and social, approaching other seals and, even, people on the beach and in the water as they go about figuring out how to survive as a seal on their own. For her safety, scientists decided to move RH58’s pup to a more remote location.

And at Midway Atoll

A mother monk seal bit a woman–an employee with U.S. Fish and Wildlife Service–several times while the woman was swimming in the only section of water open for recreational use. The monk seal approached the woman from an adjacent beach where she had pupped. The woman remained on Midway to recover from her injuries. While this incident is extremely unfortunate, it is a good reminder that monk seals are wild animals and that each seal is an individual, each reacting differently to what might seem to be similar situations.

 

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Last week, on a sunny day, our second pup of the year graduated to “weaner” status and was tagged RJ36. After about six weeks of dedicated nursing, RJ36’s mother, RK30, weaned him and headed back to the nourishing depths of the ocean to replenish the approximate one-third body weight she lost during the nearly six weeks she nursed RJ36 to a healthy weaner weight in the neighborhood of 175 pounds.

While the procedure to tag monk seal weaners only takes about five minutes, the effort to tag this pup took much longer–all due to the remote location of where RK30 chose to birth.

For years now, the Kauai Hawaiian Monk Seal Hui has been aided when accessing remote beaches by marine biologist Captain Tara Leota, sole owner-operator of Kauai Sea Rider Adventures. Captain Tara leads small groups of ecologically-minded guests on snorkeling adventures around Kauai. Captain Tara, her crew, and her guests welcomed our tagging team aboard her 25-foot rigid inflatable boat for the adventurous journey to find RJ36.

Currently, the way we track matriarchal lineage of monk seals is by visual observations of mothers and pups. As such, our goal is always to tag pups within days of their weaning. Once weaners start exploring other parts of the island and mixing with other monk seals, we cannot be sure of their lineage. Thus, Captain Tara has likely helped us know with surety the matriarchal lines of six or eight monk seals over the years. That’s a great effort.

Mahalo Kauai Sea Rider Adventures!

RJ36 (5) 7.19.17-2

Photo credit: V. Bloy

RJ36 (3) 7.9.17-2

Photo credit: V. Bloy

RJ36 tags 7.19.17-2

Photo credit: V. Bloy

Kauai Sea Riders Crew-2

Photo credit: V. Bloy

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