Here we have listed the sources of the potential seminar that maybe you are interested in. Please check the updated link before you navigate in more detail. The topic seminar presented is divers.

World Academy of Science, Engineering, and Technology is an open science research organization dedicated to promoting the advancement of science, engineering, and technology.
WASET is the bank of source interesting seminar that may be fit with your field. Here is the list of seminars related to marine and fisheries.
Website: https://waset.org/fisheries-conferences

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Website: https://10times.com/fisheries