Sirenian (Manatee and Dugong): Often seen as quiet, sirenians actually produce loud vocalizations crucial for mother-calf bonding and social interaction. Manatees emit squeaks, squeals, and chirps up to 100+ decibels, especially in murky waters where visibility is low. These sounds help maintain group cohesion and warn of danger. Calves call to their mothers, who respond with identifying calls. Though not as loud as marine giants, their vocal intensity is significant in shallow coastal habitats. Noise from boats and industrial activity can mask their communication, leading to separation and stress. Conservation efforts now consider acoustic pollution, recognizing that even gentle giants rely on sound for survival in increasingly noisy aquatic environments.
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