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Monk Seal Behavior Spotlight: Male Dominance Displays

Male Hawaiian monk seals sometimes “cruise” beaches and get into scuffles with one another—and it all has to do with mating. 
August 30, 2022 - Science Blog ,
Two male Hawaiian monk seals arguing in the water. Two male monk seals face off at the water’s edge on a Kauaʻi beach. Credit: NOAA Fisheries/Joseph Bennington-Castro

Counting Hawaiian Monk Seals

Learn how NOAA estimates the number of Hawaiian monk seals and accounts for uncertainty in the numbers.
April 28, 2022 - Science Blog ,
Two young seals rest on a beach in the Papahānaumokuākea Marine National Monument. Credit: NOAA Fisheries (Permit #22677) Two young seals rest on a beach in the Papahānaumokuākea Marine National Monument. Credit: NOAA Fisheries (Permit #22677)

Keepin' it Reel: When Your Catch of the Day is Not What You Expected

A seal biologist’s experience on the wrong end of the line reminds us that we must be careful when fishing around protected species.
December 04, 2020 - Science Blog ,
Hawaiian monk seal RKA6 laying on beach with a hook in its mouth Hawaiian monk seal RKA6 resting on the beach with a hooked lip. Photo: Gary Langley.

Sighting Patterns Reveal Unobserved Pupping Events To Revise Reproductive Rate Estimates for Hawaiian Monk Seals in the Main Hawaiian Islands

We used sighting reports to describe female breeding biology and reproductive success in the main Hawaiian Islands.
November 23, 2020 - Peer-Reviewed Research ,

Revising Reproductive Rate Estimates for Hawaiian Monk Seals in the Main Hawaiian Islands

By examining sighting histories, we infer that 25 unobserved pupping events that had previously gone uncounted. This is the highest reproductive rate reported for any of the Hawaiian monk seal breeding sites.
November 23, 2020 - Peer-Reviewed Research ,

Population-Level Impacts of Natural and Anthropogenic Causes-of-Death for Hawaiian Monk Seals in the Main Hawaiian Islands

In this analysis, we quantify not only the frequency of specific causes‐of‐death (CODs) among main Hawaiian Island monk seals, but also assess the impact of individual CODs on the intrinsic growth rate, λ, of this population.
September 16, 2020 - Peer-Reviewed Research ,

Conservation Translocations of Hawaiian Monk Seals: Accounting for Variability in Body Condition Improves Evaluation of Translocation Efficacy

Hawaiian monk seal pup translocations conducted during 2012–2014 had a positive effect on the survival of pups.
August 03, 2020 - Peer-Reviewed Research ,

Four Generations of Hawaiian Monk Seals

A surprise discovery tells the story of one female's contribution to a population of endangered Hawaiian monk seals.
April 03, 2020 - Research ,
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