![More than 100 years after first sighting in Manila Bay, rare bird reappears](https://www.rappler.com/tachyon/2024/01/chinese-crested-tern-manila-bay-december-2023.jpeg?resize=644%2C362&crop=0px%2C0px%2C829px%2C466px)
![More than 100 years after first sighting in Manila Bay, rare bird reappears](https://www.rappler.com/tachyon/2024/01/chinese-crested-tern-manila-bay-december-2023.jpeg?resize=644%2C362&crop=0px%2C0px%2C829px%2C466px)
![Elusive Irrawaddy dolphins in Bicol fast disappearing](https://www.rappler.com/tachyon/2023/07/photo_2023-07-14-11.58.06.jpeg?resize=257%2C257&crop=38px%2C0px%2C720px%2C720px)
![Umaasim ang dagat](https://www.rappler.com/tachyon/2022/12/umaasim-ang-dagat-december-17-2022-2.jpg?resize=257%2C257&crop=263px%2C0px%2C1080px%2C1080px)
A system of plants, animals and bacteria interrelated in its physical/chemical environment
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