Samoa Expedition Finds Thriving Deep Reefs but Damage in Shallow Waters
A four-week scientific expedition in Samoa has found a striking contrast between the condition of the country’s deeper and shallower reefs.
A team from National Geographic Pristine Seas, working with Samoa’s Ministry of Natural Resources and Environment, has been surveying the country’s waters using scientific divers, deep-sea cameras, submersibles and environmental DNA sampling.
The 37-member expedition has been working around Savai’i and other parts of Samoa, gathering information on marine life and the condition of reef habitats. During the first week alone, the team completed four submersible dives to depths of around 500 metres, while also recording humpback and pilot whales.
The divers found some of the most impressive reefs at around 40 to 50 metres, with large table corals and what expedition leader Paul Rose described as exceptionally healthy reef habitat.
Closer to the surface, however, the picture was very different.
The expedition reported damage to shallow reefs associated with heat stress, while researchers also found fewer large fish and sharks than expected. The findings highlight the different pressures affecting reef ecosystems at different depths.
For Samoa, the expedition also provides evidence that protection can make a difference.
Researchers say areas that receive effective protection can recover, with healthy habitats providing a foundation for marine ecosystems to regenerate.
The expedition forms part of Samoa’s wider efforts to strengthen protection and management of its marine environment. Scientists are surveying newly protected areas to provide information that can help guide future conservation decisions.
The findings also demonstrate the value of diving and underwater exploration in assessing reef health. While some of the most damaged habitats are readily accessible to divers, the expedition’s deeper work is revealing reef communities that would otherwise remain largely unseen.
Source: Pacific Media Network
