Dolphins are being drowned out by noise pollution in Hong Kong - EHN
How many pink river dolphins are left as of 2018? - Quora
Dolphins are being drowned out by noise pollution in Hong Kong
The need for action on underwater noise pollution is loud and
52 Whales Die After Mass Stranding in Western Australia
Dolphins Recorded Having a 'Conversation?' Not So Fast.
Dolphins come out to play without noisy ferries
Dolphins 'shout' over loud underwater noise to complete a
Are pink dolphins actually real? - Quora
New Dolphin Species Discovered in Big City Harbor
A sad day for a dolphin from Hong Kong - Whale & Dolphin
Underwater noise pollution - Hong Kong Dolphin Conservation Society
Threats to Dolphins - Dolphin Way
Dolphins 'shout' to get heard over noise pollution - BBC News