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Old Baldy, Canada | photo by Cameron Schaus

Sierra Club
Local group expands efforts to save manta rays


  manta ray
   
Santa Cruz-based organization, The Manta Network, is expanding its efforts to collect manta sightings from around the world. The data collected will assist researchers to identify migration patterns of manta rays and the size of the manta population worldwide.

Founded in 1996, The Manta Network is dedicated to protecting Manta birostris populations. Director Robert Aston is a Sierra Club member, underwater photographer and journalist who holds Master’s degrees in chemistry and earth sciences.

Manta rays are found in every tropical ocean. Although often confused with other members of the family Mobulidae, the Great Manta (Manta birostris) stands apart as the largest of all rays with wingspans of up to 22 feet.

“The Pacific Manta Ray is a combination of great size and gentle grace,” explained Bob Rubin, Ph.D. Changes in fishing practices are exerting increased pressures on the manta population. More information is critically needed on the impact of manta takes and whether manta populations will be able to withstand existing pressures. There is a delicate balance between the economic well-being of small fishing villages, the demand for traditional Chinese medicines and the need to protect manta populations for ecosystem health. Helping local groups protect ecosystems frequented by mantas for tourism may be one solution.

The Manta Network is recruiting members of the dive industry around the world to provide more frequent and structured sightings data. Activities will also identify and track manta ray conservation efforts worldwide. Collection of sightings information on a worldwide-basis will help researchers to identify strategically important areas and changes in manta populations. In addition, the organization is raising funds to support field research. For more information contact Robert Aston, Director, The Manta Network at aston@save-the-mantas.org or 426-4400.
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