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Marine Environmental Biology Lab
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A lab that attaches loggers to eels and dugongs to track their behavior and protect rich seas.
AboutAbout the lab
Measuring marine life and its environment directly.
The Marine Environmental Biology Lab studies marine organisms and the biological, physical, and chemical environment that surrounds them.
The lab develops and uses biologging and biotelemetry, methods for measuring the behavior of organisms directly.
It also studies how to maintain the richness of marine ecosystems by clarifying and modeling the mechanisms that produce marine biological resources.
Undergraduates are assigned to the Marine Biological Science Course in their third year, and to this lab within the course in their fourth year. (For graduate study, the lab is part of the Division of Applied Biosciences in the Graduate School of Agriculture.)
Key terms
- Biologging
- A method in which a small data logger is attached to an animal to record its behavior and the environment around it.
- Biotelemetry
- A method of tracking an animal's location and movements by receiving the radio or sound waves from a transmitter attached to it.
ResearchResearch themes
The lab conducts research to conserve the marine environment and sustainably use rich fishery resources. Its work covers measuring the behavior of organisms, evaluating the effects of human activities on them, and clarifying the mechanisms of the sea that produce biological resources.
*Illustrative imageTracking the behavior of marine and river animals
Using data loggers, ultrasonic transmitters, and acoustic recorders, the lab determines when, where, what, and how much animals do. It studies Japanese eels, Pacific bluefin tuna, Mekong giant catfish, dugongs, dolphins, and other animals in Japan and overseas.
*Illustrative imageEffects of human activities on marine animals
Using acoustic recorders and other instruments, the lab evaluates how construction work and noise affect underwater organisms. The main subjects are large animals at the top of the food chain, such as dolphins and dugongs.
*Illustrative imageHow rich seas are produced
The lab conducts surveys along the Pacific and Sea of Japan coasts to clarify the flows of carbon, nitrogen, and phosphorus. It also studies how river water and groundwater affect the sea, and how global warming and torrential rain affect the habitats of marine organisms.
MembersFaculty
The members of the Marine Environmental Biology Lab are faculty, researchers, administrative assistants, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorHiromichi Mitamura
- Project ProfessorYoh Yamashita
- Associate ProfessorKotaro Ichikawa
- Associate ProfessorSatoko Kimura
- Assistant ProfessorShiho Kobayashi
- Program-Specific Assistant ProfessorJunichi Takagi
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Dugong Marsa Alam” Julien Willem / CC BY-SA 3.0 (cropped)
- Tracking the behavior of marine and river animals: “Anguilla japonica” opencage / CC BY-SA 2.5 (cropped)
- Effects of human activities on marine animals: “Neophocaena phocaenoides -Miyajima Aquarium -Japan-8a” ori2uru / CC BY 2.0 (cropped)
- How rich seas are produced: “Ōhama Beach 02” na0905 / CC BY 2.0 (cropped)
- Related lab (里海生態保全学分野): “Maizuru bay” Sea of Japan / CC BY-SA 3.0 (cropped)
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