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Why sharks and rays keep our oceans alive | Louisa Graf | TEDxDeakin Uni Melbourne
TEDx Talks· 2025-12-22 17:17
Environmental Impact & Conservation - Over one-third (33%) of all shark and ray species are threatened with extinction worldwide, equating to over 400 species [3] - Declining shark and ray populations have been linked to the functional extinction of seagrass meadows in the Indian Ocean and threaten coral reefs in Australia [4][5] - Sharks and rays play a crucial role in regulating the ocean's ecosystem and maintaining its balance [15] Research & Biodiversity - There are over 50 species of sharks and rays in Port Philip Bay, Australia, many of which are meso predators [8] - Research focuses on tracking shark and ray movements using small trackers and underwater listening stations to understand their role in the marine ecosystem [11][12] - Muscle biopsies are used to analyze the diet of sharks and rays, providing insights into their ecological roles [13] Threats & Human Impact - Overfishing is the number one threat to sharks and rays globally [17] - Shark products are present in everyday items like pet food, supplements, and skincare [17][18] - Three billion people rely on marine and coastal resources for their livelihoods, highlighting the importance of ocean conservation [15] Ocean's Role - The ocean provides 50% of the air we breathe, emphasizing the critical role of marine ecosystems [15]
AI for Ocean Health | Pappu Jha | TEDxSouthern Miss
TEDx Talks· 2025-12-19 17:28
Thank you. Every day, miles off the coast, illegal fishing boats harvest tons of seafood unchecked, unnoticed, and unregulated. At the same time, harmful algal blooms continue to spread across water, threatening marine life and human health.The question is, how do we even begin to protect something as vast and dynamic as the ocean. Good afternoon everyone. My name is Papuha.I am an undergraduate junior majoring in computer science at the University of Southern Mississippi. I am working as an information tec ...