Jellyfish Dynamics in the Eastern Mediterranean (JellyDEM)

Together with Dr. Tamar Lotan and Dr. Daniel Sher we take an interdisciplinary approach to elucidate the physical and biological processes controlling the emergence, dynamics and decline of swarms of Rhopilema nomadica, the most abundant jellyfish in the Israeli cost and in the Wastern Mediterranean Sea. Specifically, we aim to: 1) Map the time-varying spatial distribution patterns of R. nomadica swarms along the Israeli Mediterranean coast, and characterize the underlying physical and biological processes; 2) Identify the environmental conditions leading to the demise of the swarm, testing the hypothesis that it is caused by bacterial pathogens.


Jellyfish / water motion experiment, Haifa Bay, July 2020

Ocean-science Data INtegration Initiative (ODINI)

Together with Dr. Tomer Sagi we are constructing a system for aggregation and sharing of oceanic data, in order to provide researchers with the ability to fuse various datasets. The research is driven by the understanding that while a large and growing number of studies and data repositories are now available on-line, manually integrating different datasets is a tedious and grueling process leading to a rising need for automated integration tools. Concurrently, artificial agents are becoming increasingly adept at extracting knowledge from text and using domain ontologies to integrate and align data. Here, we apply artificial intelligence tool to address the three phases of the ocean science data integration process : discover, merge, and evaluate/correct (Fig. 1).

Figure 1. The three phases of the data integration process, and their application in ocean science. Figure taken from Sagi, Lehahn and Bar (2020), Artificial intelligence for ocean science data integration: current state, gaps, and way forward. Elem. Sci. Anth., doi: (pdf).

Contact: Dr. Yoav Lehahn, Multipurpose Building, Room 266, University of Haifa, Abba Khoushy Ave. 199, Haifa 3498838, Israel

Tel: (+972) 545-280-992 | Email: