# Hawaiian Monk Seal (*neomonachus schauinslandi*) The Hawaiian Monk Seal, known scientifically as Neomonachus schauinslandi, is one of the world's most critically endangered marine mammals and the only seal native to Hawaii. This fascinating pinniped plays a vital role in its unique island ecosystem. Often found basking on pristine, secluded beaches, these seals are primarily bottom-feeders, adept at navigating the complex coral reefs and ocean floor of the Hawaiian Archipelago in search of food. Their isolation in the remote Northwestern Hawaiian Islands has made them a symbol of marine conservation efforts, highlighting the delicate balance of life in this Pacific paradise and the urgent need to protect vulnerable species from human-induced threats. - **Category:** [Mammals](https://www.snappit.app/explore/categories/mammal) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 6 - **Habitat:** Hawaiian Monk Seals are primarily found in the warm, clear waters and isolated, sandy beaches of the Hawaiian Archipelago, particularly the remote Northwestern Hawaiian Islands. ![Hawaiian Monk Seal](https://inaturalist-open-data.s3.amazonaws.com/photos/107991147/medium.jpg) Photo: Lucy Keith-Diagne, CC BY 4.0 · [iNaturalist](https://www.inaturalist.org/photos/107991147) ## Appearance Hawaiian Monk Seals possess a sleek, torpedo-shaped body, typically dark gray or brownish on their dorsal side, fading to a lighter, silvery-gray or yellowish-white on their belly. Pups are born with a thick, dark, woolly coat called lanugo, which they shed after a few weeks. Adults average 2.1 to 2.4 meters (7-8 feet) in length and can weigh between 170 to 270 kilograms (375-600 pounds). Their large, dark eyes and relatively small, flat head give them a somewhat 'hooded' appearance, which contributes to their common name. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Chordata - **Class:** Mammalia - **Order:** Carnivora - **Family:** Phocidae - **Genus:** Neomonachus ## Interesting facts - Female Hawaiian Monk Seals return to their birth islands to give birth to their single pup, showing strong philopatry. - Hawaiian Monk Seal pups are born with a dark, woolly coat called lanugo, which they shed after about three to five weeks to reveal their adult fur. - The Hawaiian Monk Seal is one of only two remaining monk seal species in the world, the other being the critically endangered Mediterranean Monk Seal. - They are named 'monk' seals due to their solitary nature and the folds of skin around their neck that resemble a monk's cowl. ## Special abilities - **Deep Foraging Diver:** Hawaiian Monk Seals can dive to impressive depths, sometimes exceeding 500 meters (1,640 feet), to hunt for their prey on the ocean floor, utilizing their excellent eyesight and whiskers to locate food in low light conditions. - **Catastrophic Molt:** Unlike most other seals that gradually shed their fur, Hawaiian Monk Seals undergo a 'catastrophic molt' once a year, shedding both their fur and outer layer of skin in large patches while hauled out on land. - **Extended Underwater Breath-Holding:** These seals possess specialized physiological adaptations, including a high blood volume and efficient oxygen storage, allowing them to hold their breath for up to 20 minutes during dives to pursue prey. ## Measurements & details - **Length:** 210-240 cm - **Weight:** 170-270 kg - **Lifespan:** 25-30 years - **Speed:** 25 km/h - **Incubation:** 310-330 days ## Diet & Feeding Hawaiian Monk Seals are opportunistic bottom-feeders, primarily preying on a variety of marine organisms found on coral reefs and the seafloor. - **Age differences:** Younger seals tend to eat smaller and shallower-water prey, gradually shifting to larger and deeper-water food sources as they mature and develop stronger diving capabilities. - **Primary Foods:** reef fish, octopus, eels, crabs, lobsters, shrimp - **Foraging Method:** Foraging, Pursuit ## Ecological connections - **Hunts:** [Tiger Shark](https://www.snappit.app/explore/tiger-shark) (*Galeocerdo cuvier*) — Major natural predator of adult and juvenile seals. - **Hunts:** Reef Octopus (*Octopus cyanea*) — A primary prey item, typically hunted on the seafloor. - **Hunts:** Eels (*Muraenidae*) — These bottom-dwelling fish are a significant part of the monk seal's diet. - **Ecosystem impact:** [Human](https://www.snappit.app/explore/human) (*Homo sapiens*) — Humans pose threats through marine debris, fishing gear entanglement, and habitat encroachment. ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify Hawaiian Monk Seal? Compare ears, muzzle, tail, feet and coat markings. Size is hard to judge without something nearby for scale, and young mammals may not have adult coloring yet. Mammal Identifier: upload a photo and compare the visible details. ### How long is Hawaiian Monk Seal? 210-240 cm ### How much does Hawaiian Monk Seal weigh? 170-270 kg ### How long does Hawaiian Monk Seal live? 25-30 years ### How fast can Hawaiian Monk Seal move? 25 km/h ### What does Hawaiian Monk Seal eat? Hawaiian Monk Seals are opportunistic bottom-feeders, primarily preying on a variety of marine organisms found on coral reefs and the seafloor. ### Where is Hawaiian Monk Seal usually found? Hawaiian Monk Seals are primarily found in the warm, clear waters and isolated, sandy beaches of the Hawaiian Archipelago, particularly the remote Northwestern Hawaiian Islands. ### How does Hawaiian Monk Seal hunt? Foraging, Pursuit ## Where to spot - [Allerton Garden](https://www.snappit.app/guides/places/allerton-garden) — Hawaii, US · Botanical Garden - [Lahaina Historic District](https://www.snappit.app/guides/places/lahaina-historic-district) — US · Historic District - [National Tropical Botanical Garden](https://www.snappit.app/guides/places/national-tropical-botanical-garden) — Hawaii, US · Botanical Garden - [Waikiki Aquarium](https://www.snappit.app/guides/places/waikiki-aquarium) — Hawaii, US · Zoo - [Waikiki Aquarium](https://www.snappit.app/guides/places/waikiki-aquarium-hawaii) — Hawaii, US · Aquarium - [Sea Life Park Hawaii](https://www.snappit.app/guides/places/sea-life-park-hawaii) — Hawaii, US · Aquarium [View all places to see Hawaiian Monk Seal](https://www.snappit.app/guides/where-to-see/hawaiian-monk-seal) ## More Mammals - [Eastern Fox Squirrel](https://www.snappit.app/explore/eastern-fox-squirrel) (*Sciurus niger*) - [Eastern Cottontail](https://www.snappit.app/explore/eastern-cottontail) (*Sylvilagus floridanus*) - [Eastern Chipmunk](https://www.snappit.app/explore/eastern-chipmunk) (*Tamias striatus*) - [California Ground Squirrel](https://www.snappit.app/explore/california-ground-squirrel) (*Otospermophilus beecheyi*) --- Source: [Hawaiian Monk Seal: Facts & Places to See — Snappit](https://www.snappit.app/explore/hawaiian-monk-seal)