We saw a number of humpback doing all sorts of behaviours right up to fully breeching! I have been whale watching in Mexico (Puerto Vallarta), Massachusetts, British Columbia, Virginia, to name a few places and this trip was by far the best I've been on for sightings and for the information given by the guides! more

Was excellent. Only saw 3 whales but was really worth the wait. Captain and Guide were very informative and went out of their way to explain things to us. This is a more official type tour and you really feel like a part of the data collecting. Takes about 5 hours. Sandwiches and soft drinks/water are provided. They really make... more

Went to look for whales with Oscar and Olga 2nd week of January and loved it! We luckily found two and were able to follow them around. It was my husband's first time seeing whales and was very impressed. The boat was a 22 foot speed boat (comparable to a Boston Whaler) with the max passengers being 8, two of... more

We had been in Mazatlan many times so we looked for something different/new to do this time. We found info on eco-tours made by ONCA explorations so we contacted them. Due to windy weather our trip was posponed until our last day in Maza. So we recommend people to contact them by phone since arrival so you have more opportunities... more

Oscar and his group are highly unusual in that he is not only observing whales in their habitat, but also gathering data for wildlife biologists and increasing awareness for locals. His research deals with impact of commercial fishing on the whale population in the area, patterns of behavior of groups and individual whales. Because he is involved in the research,... more