What kind of dolphin is the Atlantic humpback dolphin?

The Atlantic humpback dolphin is a species of humpback dolphin belonging to the genus Sousa.

As their name suggests, they have a small hump on their back. This hump is located in front of their dorsal fin and is made of fat. They also have a low dorsal fin compared to other dolphins. They are found in the Atlantic Ocean, off the coast of West Africa, and prefer shallow waters. They have a grayish body color, and as they age, they develop white spots on their bodies. They form small groups, typically consisting of a few to several dozen individuals. They feed on fish, squid, and crustaceans. They are also known for their curious nature and may approach boats or swim alongside them.

What do Atlantic humpback dolphins eat?

Atlantic humpback dolphins are carnivores, primarily feeding on fish, squid, shrimp, and crabs.

They swim along the shallow seabed, searching for food. They can also use echolocation to locate prey. By emitting sound waves, they can understand their surroundings and pinpoint the location of their prey.

[Quiz!] Why are Atlantic humpback dolphins declining in number?

The Atlantic humpback dolphin is listed as 'Vulnerable' on the IUCN (International Union for Conservation of Nature) Red List.

Their numbers are declining primarily due to human activities, such as:

・Bycatch from fisheries: They can get caught accidentally in fishing nets.

・Marine pollution: Industrial wastewater, sewage, and ship emissions are polluting their habitat and harming their food sources.

・Habitat destruction: Coastal development and environmental degradation are destroying their homes.

・Noise pollution: Noise from boats and sonar interferes with their communication and causes stress.

To protect Atlantic humpback dolphins, fishing regulations, pollution control, habitat protection, and noise reduction measures are necessary.

[Quiz!] What efforts are being made to protect Atlantic humpback dolphins?

Various efforts are being made to protect Atlantic humpback dolphins.

・Fishing regulations: Improving fishing gear and practices, and setting catch limits to prevent accidental capture of dolphins in fishing nets (bycatch).

・Marine pollution control: Implementing various measures to prevent marine pollution caused by industrial wastewater, sewage, and ship emissions.

・Habitat protection: Establishing marine protected areas and regulating development to protect the coastal waters where Atlantic humpback dolphins live.

・Public awareness campaigns: Raising awareness about the current situation of Atlantic humpback dolphins and the importance of conservation.

・International cooperation: Because Atlantic humpback dolphins are widely distributed, international cooperation is essential for their conservation.

While these efforts are showing some progress, the situation is not yet secure. The future of these dolphins depends on the understanding and cooperation of each and every one of us.