SAN DIEGO — Head to Imperial Beach for this week’s hike — and bring a pair of binoculars to spot some wildlife along the way. The Bayshore Bikeway is a 24-mile route that travels through ...

This roughly 2-mile out-and-back walk follows a section of the bikeway, passing by the San Diego Bay National Wildlife Refuge in Imperial Beach.

By last December, the first group of larvae was ready to be released on the refuge. The 742 larvae were still hibernating, and while that is uncommon for a butterfly, it is typical for Quinos.

As of now, about 11,200 square feet of Caulerpa have been found in the San Diego Bay, including near the Coronado Cays and the San Diego Bay National Wildlife Refuge.

This roughly 2-mile out-and-back walk follows a section of the bikeway, passing by the San Diego Bay National Wildlife Refuge in Imperial Beach.