San Francisco Bay Spectacle: Whales' Feeding Frenzy

SAN FRANCISCO (CBSLA.com) — A kayaker captured incredible video of whales breaching the waters with the San Francisco skyline as a backdrop.

Marine mammal experts say the humpbacks are on a feeding frenzy.

They're loading up on herring and anchovies as they make their way north.

A group of kayakers stumbled on this huge surprise on Sunday.

The feeding lasted about half an hour.