But it is on the state and federal endangered-species lists, and Mr. Di Giovanni said it was not commonly spotted in winter.

The river hyndburn is a haven for trout and eels and other species such as roach and perch are commonly spotted.

The sandy bottom means snorkeling is of limited interest, although turtles, tarpon and other fish are commonly spotted.

In certain reefs, most notably in the Florida Keys, this beautifully colored fish is commonly spotted among divers and snorkelers.

Whales are commonly spotted in winter months heading north.

They are commonly spotted for their characteristic double doors on the front of the house.

Great Blue Herons and ospreys are commonly spotted on all four of the islands on the lake.

Cats, of course, are commonly spotted in the city's corner bodegas and greasy spoons, where they prowl for mice - but function more as exterminators than pets.

They are commonly spotted on the shoreline.

Seals are commonly spotted around the island and basking on neighbouring outcrops.