Tahlequah, who is known to scientists as J35 ... have found high levels of PCBs and the stress hormone cortisol in pregnant females. These clues suggest that the orca mothers aren’t getting ...

Tahlequah is part of a group of Southern Resident ... to keep up with their body’s demands when raising a calf. From the pregnancy itself to feeding their young, the physical toll on a new ...

The Centre for Whale Research says the newborn was spotted swimming alongside a whale known as J40 near Victoria on Sunday.