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Deep Dive: Expedition To Extend Human Intervention Within Mesophotic Zone; 'Like Diving The Grand Canyon'

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PROVIDENCE, Rhode Island -- Ocean Opportunity, a Rhode Island based not for profit organization, is pleased to announce a forthcoming expedition to explore and document the natural history of the mesophotic, or 'middle light', zone from 200 to 500 feet in the Exumas, Bahamas from April 28 through May 8th to be hosted at the John H. Perry Jr. Caribbean Research Center - a facility synonymous with a long lineage of advancements in marine technology and innovations in ocean exploration.

This expedition is an extension of a successful November project to Andros, Bahamas in which the team worked to 430 feet - more than 3 times the depth of conventional scuba diving.

November's expedition, made possible by a grant from the National Geographic Society's Waitt Grants Program proved catalytic and has attracted a multidisciplinary team of collaborators including well respected biologists, geologists, and technologists interested in accessing the unexplored Mesophtoic Coral Ecosystems (MCEs) to gather data from this alien environment. Collaborators include individuals from the American Museum of Natural History, the City University of NewYork, the University of Connecticut, and the University of Kentucky.

The deep diving team (including Jeff Godfrey of UConn and NGS/Waitt Grantee Michael Lombardi of Ocean Opportunity) will use advanced manned diving techniques to allow direct, hands-on access to the deep coral reef environment. Throughout the Bahamas, a vertical 'wall' provides a direct physical linkage from the shallows to more than 2000 feet. These precipitous drop-offs are the focal point for investigation.

In November, the team conducted six dives deeper than 300 feet, with two deeper than 400 feet. Exploration diver Jeff Godfrey described the dives as "being like diving the Grand Canyon". These depths, especially pushing the lower limit of the mesophotic zone at sub-400 feet, provide an opportunity for very real demonstrations of the working capacity of humans in an extreme environment.

Lombardi commented, "we are continuing to gather data throughout these expeditions that will be analyzed to evaluate the in-water biomechanics and efficiency of humans working at depths considered the 'twilight zone' or 'innerspace' or 'mesophotic' (200-500 feet) in remote locations. This work represents a paradigm shift in scientific diving, as we are now demonstrating a rate of efficiency comparable to more conventional shallow water scuba. This is being done at low cost, and with limited surface support and infrastructure. These deep excursions, while considered exploratory, are providing very real data to enable discovery and drive innovation by both US and international collaborators."

Ambitious, yet critical undertakings for the project includes science tasks to support a multidisciplinary collaborative team of biologists, ichthyologist, ecologists, and chemists from institutions including the American Museum of Natural History, the City University of New Yrok, the University of Connecticut, and others.

When asked 'why work to the frontier limits of manned exploration?', Lombardi states, "The reaction time, real-time decision making, and personal interaction offered by wet diving at these depths, as opposed to robotics use, brings the raw and intimate experience of human exploration back into the game. Nearly 70 years of marine science has been fueled by the ability to routinely access the shallow coral reef ecosystems - that excitement, and creativity made possible by a researcher actually being there catalyzed the marine science field that we know today. We are on the verge of creating an opportunity for the next 70 years. This is a very exciting time for benthic marine scientists."

Imagery gathered will be hosted on www.mesophotic.org, a NOAA sponsored database aimed at distributing data from this difficult to access environment to a wide array of interested researchers and students. Researchers are invited to access these images for their own analyses of the biodiversity, natural history, and geology of this environment.

Views expressed in this article do not necessarily reflect those of UnderwaterTimes.com, its staff or its advertisers.


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