A humpback whale that has been circling the waters near Alameda for a week appears to be unhealthy, a Marine Mammal Center spokesman said Monday.
The Marin Headlands-based center has been monitoring the whale, which seems to be an adult female with poor skin condition, since May 27 when it first received reports of its presence in Alameda's Airport Lagoon, center spokesman Giancarlo Rulli said.
Rulli said experts at the center attributed the animal's unusually long stay in the Bay to its poor health, speculating it sought shelter from harsher open waters in the protective cove.
Scientists determined the whale has been feeding on fish in the cove, and said it has no plans to steward it out for fear of causing it stress.
Humpback whales have been spotted feeding on anchovies near the Golden Gate Bridge and Alcatraz for the past three years, Rulli said, but are usually quick to return to the open ocean.
Scientists at the center do not know whether the whale's poor body condition is related to the high number of gray whale deaths this year since the species' migration patterns differ significantly.
Rulli said he could not estimate how long the whale would remain in the Bay searching for food, but said center officials are "hopeful that since it found its way in it would eventually find its way out."
The Marine Mammal Center has asked people not to approach or crowd the whale and to call (415) 298-SEAL to report updates or documentation.