Table 1.

Terms used by crustacean and mollusc gatherers for classifying the tides associated with the lunar cycle.

*Term used	Meanings
'Maré de sizígia' or 'maré de lua'	'spring tide' (the greatest amplitude variations between high and low tide)
'Maré de quebramento'	'breaking tide' (the amplitude variation between the tides starts to decrease)
'Maré de quarto' or 'maré de quadratura'	'neap tide' (a small difference between high and low tides occurs, preceding the next situation)
'Maré morta'	'dead tide' (the minimum amplitude variation between the tides occurs in the days when the sun and the moon pull at right angles to the earth)
'Cabeça de água morta'	'head of dead water' (the last days of the 'dead tide' as the moon starts changing to waning crescent phase)
'Primeiro lançamento'	first 'flushing' (the amplitude variation between the tides starts to increase; it is the beginning of the 'flushing').

*Other terms used in Portuguese: sol = the sun; lua cheia = full moon; new moon = lua nova; maré alta = high tide; maré baixa = low tide.