Interesting article: Orcas boost calls amid boat noise

[orangeBloke]

Orcas boost calls amid boat noise

Killer whales living off the west coast of the US are extending the length of their calls to each other to be heard above the din of heavy boat traffic.......

Full story at http://news.bbc.co.uk/2/hi/science/nature/3664891.stm

 

[bridgediver]

Its probably like trying to talk in a nightclub for them with all that racket not to mention the PCB's which may seem similar to the cigarette smoke we usually experience in a nightclub. Of course, we could leave the nightclub if we wanted to...

 

[archman]

They quoted a five-fold increase in boats between 1990 and 2000?! Dang!