Mammals diurnal

Indo-Pacific Humpback Dolphin

Sousa chinensis

Often called the 'Chinese White Dolphin,' this coastal marvel is famous for its incredible transformation from grey to a stunning bubblegum pink. Found in the shallow waters of the Indo-Pacific, they are a vibrant reminder of the wild beauty living just off our shores.

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Quick Identification

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Size

Length of 2.0 to 3.5 meters (6.6 to 11.5 feet); Weight of 150 to 230 kg (330 to 500 lbs)

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Colors

Born dark grey, fading to light grey as juveniles; adults in some regions turn white or a striking bubblegum pink with dark spotting

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Key Features

Prominent fatty hump beneath a small, falcate dorsal fin
Long, narrow beak clearly demarcated from the forehead
Stocky body that often appears 'hunched' when surfacing
Distinctive pink or white coloration in mature individuals

When You’ll See Them

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Activity pattern diurnal

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Peak hours Variable based on tides, but often most visible during early morning and late afternoon

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Season Year-round, with sightings peaking during calmer sea conditions

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Diet A variety of coastal and estuarine fish species, including croakers, mullets, and groupers, occasionally supplemented by cephalopods like squid.

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Habitat Shallow coastal waters, tropical estuaries, mangroves, and occasionally upriver in tidal reaches.

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Behavior

Indo-Pacific Humpback Dolphins are highly social marine mammals, typically found in small pods of two to ten individuals. Unlike their more boisterous bottlenose cousins, they are somewhat shy and tend to surface with a slow, rolling motion, though they occasionally engage in 'breaching' or 'tail-slapping' behaviors. They are known for their intelligence and have been observed coordinating their movements to herd fish into shallow waters or against rocky shorelines.

These dolphins are intensely coastal, rarely venturing into waters deeper than 20 meters. This brings them into frequent contact with human activity. While they are curious and may follow fishing boats to scavenge on discarded catch, they are also vulnerable to maritime traffic and pollution, making them an important indicator species for the health of coastal ecosystems.

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Camera Tips

Capturing Indo-Pacific Humpback Dolphins on a coastal camera requires a strategy focused on elevation and light management. If you have a backyard or balcony overlooking the sea, mount your camera at the highest possible point to gain a wider field of view. An angled-down orientation helps capture the dolphin's body as it breaks the surface. Because water creates significant glare, using a circular polarizing filter over your camera lens is the single most effective way to see 'through' the surface and capture the dolphin's coloration more vividly.

Standard PIR motion sensors often struggle with the distance and the constant movement of waves. To ensure you don't miss a passing pod, set your camera to a 'Time-Lapse' mode during daylight hours (capturing an image every 30-60 seconds) or use AI-powered video software that can distinguish the unique shape of a dorsal fin from a whitecap. If your camera allows for zone-based triggering, focus the 'active' area on the calmer water beyond the surf break where dolphins typically travel.

Pay close attention to the local tide charts. These dolphins often follow the rising tide into estuaries and bays to hunt. Schedule your most intensive monitoring for the two hours before and after high tide. For the best image quality, aim your camera with the sun at your back to illuminate the dolphin's pink skin; shooting directly into the sun will result in silhouettes, which are great for artistic shots but poor for species identification.

Similar Species

Species that look similar or are commonly confused with Indo-Pacific Humpback Dolphin.

Indo-Pacific Bottlenose Dolphin

Lacks the fatty hump on the back and maintains a consistent grey color without the pink or white tones seen in adults.

Australian Humpback Dolphin

Very similar in shape but typically lacks the bright pink coloration, remaining a more uniform grey into adulthood.

Frequently Asked Questions

They are primarily diurnal, meaning they are active during daylight hours. However, their specific peak activity is often dictated more by the tide than the clock, as they move closer to shore during high tides to forage for fish in mangroves and estuaries.

You cannot directly attract dolphins like you would a bird with a feeder. However, maintaining a healthy coastal environment by avoiding chemical runoff into the ocean and supporting local fish populations helps ensure they continue to visit your area. They are most drawn to areas with abundant schooling fish.

Their diet consists almost entirely of fish found in shallow coastal waters. They favor species like croakers, sea bream, and mullets. They are also known to follow fishing trawlers to pick up easy meals that fall from the nets.

In specific regions like Hong Kong, Singapore, and parts of Queensland, Australia, they are frequently seen very close to suburban coastlines and busy harbors. They prefer the shallow water near the shore over the deep open ocean.

Look for the hump: the Indo-Pacific Humpback Dolphin has a distinct fatty mound beneath its dorsal fin, whereas the Bottlenose has a smooth back. Additionally, mature Humpback Dolphins are often much lighter in color (pink or white), while Bottlenose Dolphins remain grey throughout their lives.

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