With a population of more or less 1.8 million, Porto sits on the Portuguese hills, overlooking the river estuary of Douro. (latebreaks.com)
Little Qualicum River Estuary in Qualicum Beach beside Hwy 19A provides a well - suited site for launching a canoe, light - weight boat or canoe. (discovervancouverisland.com)
In the summer beluga whales aggregate in estuaries at the heads of Ulban and Nikolaya bays to feed on spawning salmon. (en.wikipedia.org)