Hawaiian monk seals on Maui are native marine mammals you may occasionally see resting ashore or swimming through coastal waters. Sightings are unpredictable. NOAA recommends staying at least 50 feet away on land and in the water, and at least 150 feet from mothers with pups. Watch quietly, leave their route to the ocean clear, and never touch, feed, follow, or crowd them.
Main takeaways:
Aloha! Hawaiian monk seals on Maui may appear along the shoreline or pass through coastal waters, but sightings are unpredictable. These native marine mammals spend time both at sea and ashore, where resting and molting are normal parts of their lives.
This guide explains how to recognize a Hawaiian monk seal, what its behavior means, why conservation matters, and how to respond respectfully if you encounter one.
Get to know the Hawaiian monk seal, including its appearance, diet, behavior, and conservation status.
| Topic | Details |
|---|---|
| Common name | Hawaiian monk seal |
| Hawaiian name | ʻĪlio holo i ka uaua |
| Scientific name | Neomonachus schauinslandi |
| Animal family | Phocidae, the true seal or earless seal family |
| Adult size | Generally about 6 to 7 feet long and 400 to 600 pounds |
| Appearance | A streamlined body, whiskered face, flippers, and a gray to brown back with a lighter underside. Newborn pups have black fur. |
| What they eat | Fish, eels, octopus, squid, and crustaceans, often found while foraging near the seafloor |
| Why they come ashore | To rest, molt, give birth, and nurse their pups |
| Social behavior | Mostly solitary, although several seals may rest in the same general area |
| Federal protection | Listed as Endangered under the U.S. Endangered Species Act and protected by the Marine Mammal Protection Act |
| Global conservation status | Vulnerable on the IUCN Red List. This is separate from the U.S. federal listing. |
| Maui sightings | Possible along shorelines and in coastal waters, but unpredictable and never guaranteed |
Note: A resting seal doesn’t automatically need help. Give it space, follow posted guidance, and report sightings or concerns to NOAA’s Marine Wildlife Hotline at (888) 256-9840.
Yes, but sightings are unpredictable. A Hawaiian monk seal may rest on a Maui beach or pass through coastal waters. No beach, snorkeling site, or tour guarantees a sighting. NOAA recommends staying at least 50 feet from seals and at least 150 feet from mothers with pups. Stay behind posted barriers and give more space when directed.
In Hawaiian, the monk seal is known as ʻīlio holo i ka uaua (often written as ʻilioholoikauaua or ʻīlio-holo-i-ka-uaua), commonly translated as “dog that runs in rough water” (sometimes phrased “rough seas”).
You’ll see it written with or without spaces/hyphens depending on the source, but it refers to the same traditional Hawaiian name for this native, protected seal species.
Hawaiian monk seals are native to the Hawaiian archipelago. Commercial hunting in the nineteenth century severely reduced their population, and later threats continued to hinder recovery.
Today, protection involves monitoring individual seals, responding to injuries, protecting habitat, and helping people share shorelines with wildlife. Their recovery depends on addressing both historical losses and the threats seals face now.
Hawaiian monk seals remain listed as Endangered under the U.S. Endangered Species Act and are protected by the Marine Mammal Protection Act and Hawaiʻi law. Their current IUCN Red List category is Vulnerable. That global assessment does not remove their legal protections.
NOAA estimates approximately 1,600 Hawaiian monk seals across their range. Conservation has helped, but the population remains small.
A Hawaiian monk seal may rest on a Maui shoreline or move through coastal waters, but there is no dependable beach, snorkel site, or tour itinerary for seeing one.
An occasional encounter during a boat trip is a wildlife sighting, not an invitation to follow the seal. Choose your snorkeling activity for its reef setting and overall experience, and treat any seal sighting as an unexpected bonus.
If you encounter a seal ashore, leave its route to the ocean clear. In the water, give it space and avoid following, touching, or encouraging interaction.
NOAA recommends viewing Hawaiian monk seals from at least 50 feet, or 15 meters, away on land and in the water. Stay at least 150 feet, or about 45 meters, from mothers with pups.
These are recommended viewing distances. Federal and state protections also prohibit harassment and harm; being outside a stated distance does not make it acceptable to disturb a seal.
👉 For a broader refresher on wildlife viewing etiquette in Maui, check our snorkeling safety and etiquette list of what not to do in the water.
Hawaiian monk seals are predators within Hawaiʻi’s marine food webs. They forage for fish, eels, octopus, squid, and crustaceans, often searching near the seafloor for hidden prey.
They depend on both marine feeding habitat and places to rest ashore. Protecting the species therefore means considering its ocean habitat and shoreline needs together.
👉 For more on Maui’s other famous protected marine animal, see our guide to Hawaiian green sea turtles (honu) in Maui, including the best spots and respectful viewing tips.
Despite the challenges they face, the Hawaiian monk seal still has hope for the future. Dedicated scientists, conservation organizations, and government agencies are working tirelessly to protect these animals and help their population recover.
Families and individuals can support Hawaiian monk seal conservation efforts in many ways. Whether you visit Hawaii or advocate from afar, your actions can make a difference.
A seal lying quietly ashore is not necessarily stranded or sick. Monk seals haul out to rest and may remain on land for extended periods. Don’t splash water on one, try to wake it, or push it toward the ocean.
Monk seals shed their fur and the outer layer of skin during an annual molt. Their coat may look patchy during this process. Some seals also develop a greenish appearance from algae on their fur. Appearance alone does not tell you whether a seal needs help; report concerns and let trained responders assess it.
Mother monk seals generally nurse their pups for five to seven weeks and fast during that period. After weaning, the mother leaves, and the pup begins developing independent foraging skills. A pup alone is not automatically abandoned, but report concerns rather than handling it yourself.
Seeing a Hawaiian monk seal on Maui can be memorable, whether it’s resting ashore or passing through the water. Enjoy the encounter without changing the animal's behavior. Keep your distance, follow posted guidance, and report concerns to trained responders. 🦭
Use these trusted resources to confirm Hawaiian monk seal biology, conservation status, recommended viewing distances, mother-and-pup guidance, and reporting information.
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