21.   But Rebecca, who hopes to become a marine biologist, acknowledged that her job sometimes undercut her schoolwork.

22.   Either way, it looks as if the world will have to get by without one more marine biologist or an extra midwife.

23.   Emulating aquaculture methods used in Europe, a group of businessmen, fishermen and marine biologists started an experimental mussel farm in Maine called Abandoned Farm.

24.   Filth rolling down rivers and streams into Mobile Bay is threatening the crown jewel of Alabama waterways, say marine biologists and environmentalists.

25.   Fish are the focus of the red list exercise, but some marine biologists are concentrating on invertebrates.

26.   Fish stories like these used to be the exclusive conversational material of marine biologists and bald Bond villains.

27.   For marine biologists now believe that nature as well as man can produce enormous fluctuations in fish populations.

28.   For reasons that continue to baffle marine biologists, the whales tend not to clear from passing ships.

29.   Gregory Ruiz, a zoologist and marine biologist, believes that living organisms can survive the journey about these ships.

30.   He had intended to be a marine biologist, but became disenchanted with a science career after taking some classes at Arlington Heights High School.