Many strategies have evolved among fishes to maximise spawning success. One of the most striking of these is aggregation spawning, in which individuals group together, often at predictable times and locations in order to reproduce (cf. a school, which refers to a group of non-spawning fish)....

A three year study of the pearl oyster Pinctada maxima in Western Australia was carried out to provide basic biological data and to develop an understanding of the status of the stock. Aspects examined were: The location of stocks within Western Australia, both geographically and by depth. ...