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Govindarajan Molecular Ecology Lab:

Deep Sea Biodiversity and Environmental DNA

Welcome! The Govindarajan Laboratory studies the biodiversity and ecology of deep pelagic ecosystems ranging from the twilight zone to the deep seafloor. Much of our research focuses on the mesopelagic, or ocean twilight zone, but we have embarked on exciting new projects exploring seamount and trench biodiversity. Given the vast size of the deep ocean and the logistical challenges for studying these habitats, we develop and apply autonomous sampling technology which we use in conjunction with a range of deep sea exploration platforms including AUVs, ROVs, and towed instruments.

 

Interested in getting involved? Please reach out to Dr. Annette Govindarajan at afrese@whoi.edu

 

Specific research topics include:

 

  • Exploring patterns and processes of biodiversity in deep sea habitats like seamounts and trenches

 

  • Development and application of autonomous eDNA samplers with in situ filtration (the "Oceanic-WHOI" samplers) coupled with AUV, ROV, and towed platforms; including the development and application of adaptive sampling

 

  • Interpreting animal eDNA signatures by improving our understanding of the "ecology of eDNA" - how it is shed, where it goes and how it decays. We are also creating genetic reference databases for mesopelagic fishes

 

 

Recent Highlights:

  • Exploring Seamounts with eDNA- Summer, 2025: We had an incredibly successful expedition on the E/V Nautilus where we used the ROV Hercules and large-volume autonomous samplers (shown above) to obtain eDNA samples from never-before-explored seamounts in the Marshall Islands (NA174).

 

  • Deep Sea biodiversity exploration in American Samoa - Fall, 2024 We are exploring the biodiversity associated with the underwater volcano Vailulu'u, located near American Samoa and whether biological production associated with venting affects diel vertical migration of animals in the overlying water column. We are collecting eDNA samples with Mesobot and the Deep Autonomous Profiler to study how the volcanic activity animal life in the water column. Our expedition encompassed two incredible oceanographic cruises (NA164 and NA165) on the E/V Nautilus.

 

  • If you have any interesting jellyfish sightings to share, please send an email to: jellyfish@whoi.edu!