The Lives of Yap Mantas


Researching manta rays in Yap is growing a voice for studying small local populations. The individual lives of these animals can be tracked and studied using a custom database.


This is Mungzinger, the most dependable manta in Yap, she’s always here and is most distinguishable by a shark bite mark on her right wing.

Last year during mating season her ID shots showed fresh mating scars – the male side mounts, and clips on with his mouth to his partner’s wing tip for the final act, leaving marks.

Later last year she started showing and it was obvious that she was pregnant. Reproduction is a great sign for Yap’s manta population… and this isn’t the only pregnant female that was expecting this spring.


Mungzinger went off the radar for a couple of days and reappeared with two surprises; one expected and the other, not so much. The expected surprise was that she had her baby, showing a much sleeker profile in her latest research photos.


The unexpected surprise was that she also had fresh mating scars.

It will be interesting to see in the fall if she’s pregnant and maybe by next summer, another baby manta could be in Yap.

So far there is a new arrival this year for the resident database, a baby one. We first encountered a small manta on the outer reef drift diving the wall at Buena Vista – a very nice encounter in clear blue water where an ID was grabbed from a guest’s action cam video.



The next morning at the cleaning station we watched a small male (right) chasing a baby male out of the area – a first time to see that behavior as well.

On this dive the baby had his second photo IDs taken.

This baby is presumably from a different mom, it’s believed to be a little too big to be Mungzinger’s which can only be a few weeks old. Hopefully we’ll be seeing an even smaller manta romping around in the lagoon soon.

Manta Conservation


Get involved with conserving Micronesian manta rays on your exotic big animal dive vacation at next year’s Manta Mania, our citizen science big animal symposium with leading manta ray and shark researchers.

Learn about the lives of these mysterious and magical creatures while diving to protect them in the world’s first manta sanctuary.

We host daily science workshops on big animals and pack the dive plan with all of Yap’s best dive sites, a shark feed, lunches in villages and a private beach party.

Check out last year’s trip report >

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Availability & Reservations

Jim Reilly
Jim Reilly
11:27 21 Mar 18
We stayed at the hotel and dove with Manta Ray divers in early December 2017. The hotel is very comfortable, well run and staffed with wonderful employees. During our visit my wife came down with an illness and the consideration and support from the hotel and dive staff could not have been more
Sandy Stinson
Sandy Stinson
16:03 03 Mar 18
The staff couldn't be more friendly and accommodating. Food is good, (worth upgrading to include all meals). Diving is good more
Alex Divinsky
Alex Divinsky
17:24 01 Jan 18
The best place to stay in Yap. The resort is really nice and clean, the scuba diving is great, and the docked ship that houses the bar, restaurant, and movie screen is very cool. I really enjoyed my stay more
10:44 01 Jan 18
Offers one of the best accommodation service. It also has a uniquely designed restaurant.
Yi-Hsin Lin
Yi-Hsin Lin
00:53 21 Feb 17
The whole place centers around the scuba diving operation. Probably better to find somewhere else if you're not a diver. The dive operation was generally good, but a little too laid back - schedules weren't always clear, and sometimes would change without any notice. Sometimes it was hard to tell if this was really because of changing tides/weather or because of the island pace of life. Pizza is a surprisingly good option at the more
William Myers
William Myers
21:01 21 Jul 18
Great hotel. Have stayed twice.
Emily Caquelin
Emily Caquelin
04:10 02 Aug 18
Manta Ray Bay Resort is a great dive resort with extremely hospitable staff.
Daniel Granzer
Daniel Granzer
11:40 23 Aug 18
We were from 11.08 to 18.08 at the Manta Ray Bay resort and had unforgettable days there 😍In total we made 12 dives with wonderful encounters. Highlights were, of course, the manta rays in the Goofnuw Channel and many white tip reef sharks in the Shark City 🦈 But also we saw eagle rays, turtles 🐢 and buffalo head parrotfish. The hotel is beautiful and the whole team does a great job there. The food on the ship Mnuw, as well as the home-brewed beer are excellent. Thank you again to the whole team of Manta Ray Bay Resort and Yap Divers 👏🏼We also did a one-day land tour to explore the many beautiful places of this unique island. The beach is like in paradise🏝, stone money and relics from the second world war very worth to see! You find there also culturally typical houses with different meaning and use! It would be nice if more visitors would come to this great island and appreciate the great work that is done there! Anyway, we really enjoyed it and would come back anytime 🙏🏻✌🏼read more
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