The dolphin sightings were just one of several unusual appearances on the East End that environmentalists attributed to a warm winter.

A few days later, the H. J. Heinz Company said it would no longer fish for tuna on dolphin sightings or use drift nets.

Fishermen willingly co-operated with the students, passed on information about dolphin sightings, and even handed over the bodies of dolphins accidentally taken in their fishing nets.

Today, Heinz said it would not accept fish from any boat that set its nets on the basis of dolphin sightings.

The Visayas is particularly known area for dolphin sightings, and is home to one of the larger populations of the Fraser's Dolphin in the world.

Khasab is much better because of the scenery and regular dolphin sightings.

Because the fishermen use dolphin sightings to place their circular nets, the tuna and dolphins are often caught in the same net.

The spectacular scenery, wide variety of breeding birds, dolphin sightings offshore, penguins, sea lions and fur seals all help to make this a popular stop for cruise ships.

In spring and fall, dolphin sightings are common.

By New Zealand's midsummer (January and February), dolphin sightings become less common; however, the weather is much drier and calmer than in the spring or fall.