A rescue attempt to save a killer whale calf stranded in a remote tidal lagoon near Zeballos, B.C., is underway. Road access to the lagoon is blocked by members of the Ehattesaht First Nation, but an official at the scene said an attempt to get the female orca calf out of the lagoon and transferred into the open ocean began before dawn. A First Nation official who declined to provide his name said the attempt was launched because of favourable weather conditions. A statement from the First Nation said work was expected to take “much of the day” and the federal Fisheries Department, the Vancouver Aquarium, and the nation will brief the media when the operation has concluded. The two-year-old calf has been alone in the lagoon for more than…