Many communities of small cetaceans have rigid hierarchies of power.

Close to a quarter of a million small cetaceans were killed between 1976 and 1987 in Japan.

Since then, some Peruvian fishermen have specialised in capturing small cetaceans for human consumption.

Other forms of plastics also hold hazards for small cetaceans.

Little is known of the general effects of oil on the distribution of small cetaceans.

These life-history characteristics mean that Hector's dolphins, like many other small cetaceans, have a low potential for population growth.

According to Faroese legislation, it is also permitted to hunt certain species of small cetaceans other than pilot whales.

But a number of nations pledged new funding for research on small cetaceans, some of which are severely threatened.

They are an important prey item for sea lions, small cetaceans, and dogfish sharks.

The rocks are a Ramsar site, and support a variety of small cetaceans including dolphins.