Any questions? Perhaps the answers are here!

Transparency is of elementary importance to us. From the beginning, we have communicated the donations and the percentage they represent of the profit. We have tried to list the most frequently asked questions separately by category, so maybe you will find some information you were looking for.


We do, but long-term. We try to tackle the cause, the human being. Long-Term, in our eyes, this is the most effective thing you can do. Of course, we also support local clean ups, but if the unstoppable flow of plastic does not decrease, we deal exclusively with the symptoms instead of working on the causes. Tackling from all angles at once is ideal, and once we’re a bit bigger, we plan to collect and upcycle on a larger scale.

Of course, every customer is a Brand Ambassador. Those who wear the brand and ideally know a bit about the topic can talk about it with others and expand the sphere of influence. If you want to become active, you can join our Mantahari Oceancare e.V. very soon. News will come very soon!

In principle, helping hands are always needed. However, especially in Indonesia it is anything but easy with the visas for social work. In addition, the research site is so small that the time would have to be much longer than 1 month for the training to be worthwhile at all. But we would be happy to connect with the MMF, maybe something will come up!

Soon! The association is in the starting blocks, then money can be donated independently of product sales, which can either be used for current projects, or donated directly to the MMF.

In the future, we want to offer ready-made workshops for schools with a larger team, also organized through the association. Until then, founder Tim is happy to come to schools for project days or other projects if time and geography allow. The appointments are some of the most fun and it’s always nice to make the next generation aware of these issues.

Also absolutely feasible! Especially in the areas of sustainability, personal responsibility and change management, Tim has already given several presentations and has always received very positive feedback. Feel free to contact us at any time if you are interested.

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The best way to read about it is on the ABOUT USpage 🙂 Tim, Munich, Divemaster and founder of Mantahari.


An adoption is, in short, a nice symbolization of a donation. We donate to the MMF, in return we get a certificate and the “naming rights” to an individual that can also be identified via the unique pattern, called print, on the belly.

We have agreed with MMF on a donation amount of 200 USD per manta ray adoption. Since there are a lot of Mantas around Nusa Penida and Komodo National Park, there is still a lot to adopt!

Yes, it can be done and many Mantahari fans have done it! You can simply send a donation of 200 USD at the following link and send us the confirmation or a screenshot with the desired gender and the name of the manta ray to hello@mantahari.com. We will then take care of the rest! https://marinemegafauna.org/adopt-se-asia

The individual itself has as much or as little of it as the turtle swimming next to the ray. He remains free, untouched and does what manta rays do. But the money from the adoption will be invested in education and research, which should sustainably improve the situation of the manta rays on site.

No. Manta rays are not invasively chipped or tagged, identification works through a purely visual database. This means that divers, whether tourists or researchers, enter photos of manta bellies into the mantamatcher.org database and we are notified when one of “our” manta rays is spotted.

Manta rays belong to the genus Mobula and are divided into two species, the giant manta rays and the reef manta rays. Reef manta rays reach a wingspan of up to over five meters, giant manta rays even up to over seven meters. In the class Elasmobranchii, they are even quite closely related to sharks, but feed exclusively on plankton, which they ingest through their complex filter system. They are completely harmless to humans and fish and, contrary to many myths, have no venomous sting.


To date, we donate our money exclusively to the SE Asie site in Indonesia. There, the money goes into the budget, which is used for education and internships. We get mails about bigger investments and we always have a say in what the money is used for, sometimes it goes into research equipment, boat rental and of course into the internship programs, which gives young Indonesians the chance to deal with the topic of (micro-)plastics on a scientific level.

We receive regular reports and also consult with the local team on many issues in advance of investments.

The MMF is a global organization that is organized in the U.S., but has its headquarters in Mosamik because the founder lives and does research there. Our local contacts are Ellie and Janis, we were able to give Janis an internship in the second fiscal year and she stayed! She is now Project Leader in Indonesia and we are very proud to contribute a small part and her salary 🙂

Of course you can always ask us questions via the contact form and read the blog posts, here you can find some information, especially in the “Indo Updates”. Otherwise, of course, you can find a lot of useful information on the MMF homepage (marinemegafauna.org).


Currently, the choice of recycled and certified yarns is between Taiwan and China. We have found a producer in China who manufactures the caps and hats certified according to Global Recycled Standard (GRS), the working conditions are good and the quality is very good. We are aware that this is not yet the optimum, as the transport route is long (however, we only use the transport route via train here), but currently it is the best option for us. However, we are in constant exchange with other companies and producers and would like to produce Long-Term in Indonesia to help twice with local jobs.

The clothing comes through our partner Clubkollektion and is made in a fair factory under certified working conditions in India. GOTS and Fair Trade. We are of the opinion that you can have a good impact in economically weak countries if you follow the criteria.

Yes and no. The bottles do not have a defined origin, but are purchased as raw material. We are not (yet) in Ocean Bound or other programs because we are simply too small for it. For now. Of course, the goal is to go collect yourself in the medium and long term and thus have a double impact. Until then, we’re happy to tie whatever bottles into our caps and hats so they don’t find their way into the wild in the first place.

Some questions us that, the answer is relatively easy. As a small brand, unfortunately, we still have to look at what we can produce and then how much we can make each. So far, the few children’s products have not sold well enough for us to expand that greatly. But we are also trying to offer new things for the little Ocean Lovers 🙂

We keep it at very exactly 50% of the profit. This means after tax, deduction of the purchase price and the costs incurred for the sale. For example, with a cap of 34.90 euros retail price, 10 euros go directly to Indonesia.

No, we “collect” first to also keep the bureaucracy and bank costs as low as possible. In addition, we sometimes withhold donations in order to invest in the new collections with the available money. But it is all noted exactly how much money should go to Indonesia and the amount donated so far speaks for itself 🙂

Your question wasn’t there? We appreciate your message and try to answer as soon as possible. Maybe the question will make it into the FAQs here.

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