By producing clicking sounds and interpreting the returning echoes (‘echo-location’) dolphins can tell the size, shape and speed of objects underwater – that’s how they catch fish ... play an ...

Video footage captured a dolphin yawning underwater, the first confirmed case of such behavior among whales, orcas and other aquatic mammals. Researchers at Mie University said the finding ...

dolphin had become disorientated after swimming inland to follow fish or other food sources. Marine mammals could become disoriented by human activity, such as underwater noise or boats ...