diurnal migration

diurnal migration

[dī′ərn·əl mī′grā·shən]
(biology)
The daily rhythmic movements of organisms in the sea from deeper water to the surface at the approach of darkness and their return to deeper water before dawn.
References in periodicals archive ?
It could be because they display a horizontal diurnal migration pattern like some hydro- and scyphomedusae (Hamner and Hauri, 1981; Arkett, 1989; Hamner et al.
The fish, in their turn, carried out the opposite diurnal migration, feeding in the surface layers in the mornings and moving to intermediate depths later in the day and at night.
Vertical distribution and diurnal migration patterns of Jasus edwardsii phyllosomas off the east coast of the North Island, New Zealand.
Diurnal migration of plankton in the Gulf of Maine and its correlation with changes in submarine irradiation.