"That's a very good reply," the professor

agreed, "but why was it that pelagic sealing was so bad? Was it done all the year round?"

Millions of these Hatched Yearly.

Brook Trout just hatching, showing fry with egg-sacs still attached.

Courtesy of the National Geographic Magazine.

"No," said Colin, "principally when the females were coming to the spawning ground."

"And the Pribilof Islands are only a small place. Especially when compared to the range of oceans the seal cover during the rest of the year?"

"Very small."