Stephan Moldzio has been an aquarist for over 40 years – it all started with aquatic insects, tadpoles, goldfish and guppies.
In 2008 he founded the company GREEN CORALS and since then he has been producing aquacultured corals, realising sea water aquariums and offering consulting and various services in the field of sustainable marine aquaristics.
As a freelance marine biologist, diving instructor and underwater photographer, Stephan has been running marine biology workshops, reef check courses, a reef monitoring programme in Egypt, marine events and microscopy courses since 2009.
Other areas of interest include climate and global material cycles.
His aim is to inspire enthusiasm for the fascination of nature, especially the oceans, and to encourage people to get involved in the conservation and protection of our natural environment.

Sandra is responsible for the accounting, manages the office, takes care of homepage, store and shipping and also supplementary for the supply of our aquariums since our company was founded in 2008. She supports, advises and helps wherever necessary – you could also call her the “good soul” of GREEN CORALS. Sandra made her diving license already in 2005. She loves nature and any kind of outdoor sports, e.g. biking, jogging, skiing or diving.

Miriam supports us since January 2021 in media design, photo and video editing and social media. As a media scientist (B.A.), she brings her diverse design skills and experience to the colorful underwater world of coral reefs. Media also plays an important role in her free time: she enjoys attending film festivals, writing film reviews and discussing series. She also enjoys hiking and loves nature. As a Girl Scout, environmental protection is very close to her heart.

Since July 2023 Aljoscha supports us in the GREEN CORALS team with aquarium work, e.g. with water analyses, care and maintenance work and the production of coral cuttings.
He also actively helped out at our 15th anniversary GREEN CORALS event and at the Tierwelt exhibition in Magdeburg. After completing his B.Sc. in Environmental Sciences, Aljoscha is now studying for a Master’s degree at the TU Braunschweig with a focus on the behaviour of pollutants in the environment and modelling of material flows. He is particularly interested in the complex interactions between natural and human processes, with a special focus on the water cycle.

We would also like to express our sincere gratitude to our former employees for their dedicated support and initiatives in advancing GREEN CORALS.

Nadine joined the GREEN CORALS team in Nov.’21. Here she has been involved in all aspects of aquarium care, from regular water analysis, care and maintenance, to the production and shipping of coral plants. She is particularly interested in nature and environmental issues, such as man-made climate change, for which she also takes to the streets at demos. That is why she decided to study environmental sciences at the TU BS. She wrote her undergraduate thesis at the Institute of Geoecology on the physical properties of green roof substrates.In her free time, she enjoys hiking and swimming or playing the guitar.

Helen has supported us from the beginning of 2017 until the end of 2018 in all areas of aquarium care, maintenance work and at various fairs and events, such as the fair Tierwelt, Fisch& Reptil, or marine bio events at the Tauchprofis and the Natural History Museum BS. A special task was the production of coral frags, which she produced as if on an assembly line. She also did her diving license with us. After completing her bachelor thesis on population genetics in endangered fire salamanders at the TU BS, she is now writing her master thesis in immunotherapy at the University of Münster.

Johanna has actively supported us from the beginning of 2018 until the end of 2019 with aquarium maintenance, coral fragmentation, microscopy and fairs / workshops. She has a special interest in green, photoautotrophic organisms – she earned her M.Sc. in Biology from TU BS in 2019, researching hormonal regulation of plants under UV-C stress. So of course our planted rainforest roots, mangroves and algae were in the very best hands with her. Currently Johanna is doing her PhD at the University of Dublin in Ireland on programmed cell death and mitochondrial killer proteins involved.

Bärbel, as a graduate biologist (zoology) and long-time aquarist, has supported us from June 2020 to August 2021 with aquarium maintenance, water analyses, computer work and of course with the production and shipping of the coral scions. She is a lecturer in biology didactics at the TU BS and an educational specialist at the Natural History Museum in BS. She is interested in nature and gardening and self-organized trips around the world.