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Archive for the ‘RF22’ Category

Another surprise visitor—a.k.a. Hawaiian monk seal pup—arrived on Kauai’s north shore last week. Announcing PK2, Kauai’s second pup of 2023. This one was born to RH92, who was born in nearly the same location in 2016. After being regularly reported on Kauai’s east side for several years, RH92 moved to Oahu in 2019 where she seemed to settle on being an “urban” seal after pupping at Kahuku, Oahu last year.

Photo credit: K. Rogers

While many female Hawaiian monk seals pup on the beach they were born, some, like RH92, are “pioneer seals,” moving and reproducing on other islands, which helps to disperse the seals among the main Hawaiian islands. By doing so, these pioneering seals are repopulating places the species once inhabited long ago.

Before moving to Oahu, RH92 kept busy:

  • A few months after weaning, some fishermen contacted DOCARE (Department of Conservation and Resources Enforcement), because a loose dog had attacked a small monk seal. An officer immediately responded, found the dog’s owner, and issued a citation. The seal, with multiple puncture wounds, turned out to be RH92 and was given antibiotics. Thankfully, her small punctures did not become infected and healed quickly.
  • Soon thereafter, RH92 ventured to Kauai’s East Side where, as a yearling, she began feeding on fish scraps in a canal. Because two other yearlings had drowned, possibly in nets, in the same canal in previous years, she was translocated her to the West Side of the island. Meanwhile, signs near the canal and boat launch were installed and fishers asked not to dump fish scraps in the area. Luckily, fishers complied, because RH92 quickly made her way back to the East Side within two weeks later. Since then, there’s been no problems.
  • Too, RH92 experienced a severe wound on her head from a large cookie cutter shark bite that exposed her skull. But she quickly healed.

RH92 was born to another seal with a storied past—RK22.

Photo credit: Honnert

Possibly born in 2001, RK22 abandoned two pups two years in a row before sticking around and mothering. Then, RK22 became known as a “tough love” mother, because she would take her pups swimming at an early age, even leading them outside the protection of the lagoon and beyond the reef into deeper water when they were just one or two weeks old. Over eleven years, RK22 was known to give birth to eight pups. It’s possible the years she didn’t pup on Kauai that she pupped at Niihau. Here’s a recap of her known pups:

  • 2007: After contracting pneumonia during five days of trying to reunite it with RK22, pup was euthanized.
  • 2008: After an attempt to reunite pup with RK22, he was raised for a time in captivity, then released at Molokai. But after developing cataracts, he was re-captured and now lives at Waikiki Aquarium.
  • 2011: RK54. Died after ingesting a fishhook in 2012.
  • 2012: RL14. (Update to come.)
  • 2014: RF22. Died of boat strike in 2015.
  • 2015: RG22. Last known to be hauling out around Oahu.
  • 2016: RH92. Gave birth to second pup in April 2023.
  • 2017: RJ22. Died from drowning, most likely a gillnet fishing entanglement, in September 2017.

RK22 weaned RJ22, her last known pup July 2017, and she was last seen on Kauai in November 2017. She hasn’t been reported since. 

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(P)update #18

Quiet Sunday at the beach.

Two observed swims today for a total of three and a half hours. Three feedings. Plenty of nap time.

Photo credit: G. Langley

Photo credit: G. Langley

Photo credit: G. Langley

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2015 Recap

2015 Total Numbers for Kauai Marine Mammal Response Network

We tallied the efforts of our 100+ member volunteer network over the past year and are excited to share the numbers with all of you. The gradual increase in seal sightings and numbers clearly show that monk seals are doing well in the Main Hawaiian Islands. We want to emphasize that it is the efforts of our volunteers that make this possible!

 Grand sightings total: 3,321 (9.1/day) monk seal sightings on Kauai in 2015 (up from 2,516 in 2014 or 6.9 seals/day)!

  •   Kauai population: 53 unique individual seals sighted in 2015 (47 in 2014)
  •   Births: 4 seal pups born on Kauai. Two pregnant females likely pupped on Ni’ihau (RK14 and RK28 departed pregnant, returned thin)
  •  Mortalities: RF22 – died from propeller strike
  •   Ni’ihau Seals: sighted 14 new seals in 2015 likely from Ni’ihau
  •   Kauai team flipper tagged 5 of these new unknown juveniles
  •   Bleach marking effort: 22 bleach marks were applied

Stranding: 6 monk seal responses.

  •  R6AP – dewormed and examined, SAT tag showed seal moved to Ni’ihau
  •  RN44 – circle hook removed from cheek at Larsens Beach. Full recovery.
  •  RF22 – found dead, cause of death was propeller strike.
  •  RF28 – ingested a circle hook. Transported to Oahu for surgical removal, released at Waipake after successful hook removal.
  •  RF28 – follow-up capture/exam due to flipper lameness. Minor laceration discovered, seal fully recovered from hooking.
  •  N1AA – J hook removed on the beach at PMRF. Full recovery.

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Field Report: Summer 2014

Banner pupping year on Kauai – 5 pups!

In addition to the previous pups reported (PK1, PK2 and PK3) two more pups were born on the north shore of Kauai. RH58, a well known and very successful mother gave birth to PK4 on June 28th. RK28, another proven mother gave birth to PK5 on July 16th.

Pups only spend around 40 days with their mothers, during which they gain massive amounts of weight from nursing. The typical pup is born at 35 pounds and gains between 100-150 pounds in a short 5-6 weeks! The mothers fast during this time and convert blubber into very rich milk (twice the calories of heavy whipping cream).

When the mother’s blubber is depleted they abruptly wean their pups by departing, usually at night, and do not return. The young pups are large, healthy and strong swimmers by this point and quickly learn to forage on their own. They are still very naïve, however, and can easily be taught to seek humans for food and company, so it’s crucial that we monitor these ‘weaners’ and make sure humans do not interfere with this critical developmental stage. Shortly after weaning, the pups are flipper tagged and given new permanent IDs, all of the pups born in 2014 were tagged as the ‘F’ cohort (i.e. RF22, the R identifies Main Hawaiian Island seals)

Meet the 2014 Kauai ‘F’ cohort:

RF22  Photo credit: Langley

RF22 male. Photo credit: Langley

RF28  Photo credit: Langley

RF28 male. Photo credit: Langley

RF30  Photo credit: Thomton

RF30 female. Photo credit: Thomton.

RF58  Photo credit: Langley

RF58 female. Photo credit: Langley.

PK5 Male.  Photo credit: Langley.

PK5 male. Photo credit: Langley

Off-Leash Dogs: Tragically, PK5 was killed by stray dogs when he was only two weeks old. The incident occurred during the night and was therefore not witnessed by our diligent pup-sitters. Tracks, blood, and injuries to four other seals, including PK5’s mom, indicated that the mother seals did their best to protect their pups. PK4 (now tagged RF58) had over 60 bite marks on her body and developed major abscesses around her neck. She immediately received medical attention and disease screening by a NOAA veterinary team, and fortunately healed quickly. Currently she is doing well and learning how to be an independent juvenile seal. Permanent neck scars will help us identify her, but pose no risk to her survival.

This was the first known monk seal death caused by a dog and a warning to all of us that we must keep our dogs on leashes (it is State law on all beaches) and strongly encourage everyone else to do the same.

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