KORONADAL CITY: The beaching of juvenile pelagic sardines is not necessarily a sign of underwater seismic activity but is a natural phenomenon, an environment science research specialist said Monday.

Cirilo Lagnason Jr., a researcher from the Department of Environment and Natural Resources-Soccsksargen Region (DENR-12), said the large number of sardines that appeared along the coast of Barangay Tinoto in Maasim, Sarangani province on Sunday was due to a natural occurrence known as upwelling.

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