The cruise around the harbor is 45 minutes and is $15. The whale watching cruise is 2.5 hrs and is $45. These are adults prices. Not sure about children.
The answer is in the website. Just click on it, on the G. Map description.
If you book whale watching from the web site, the price is $35. At the ticket booth, $45 for whale watching, $15 for harbor cruise.
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