An estuary is a partly enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea.Estuaries form a transition zone between river environments and maritime environments.n estuary is a dynamic ecosystem with a connection with the open sea through which the sea water enters with the rhythm of the tides. The sea water entering the estuary is diluted by the fresh water flowing from rivers and streams.
Egg white cervical mucus (EWCM) is a type of cervical fluid that is produced right before ovulation. This mucus is called EWCM because it strongly resembles raw egg white in that it is clear or streaked and is very stretchy and can be watery.
1 Change in cervical mucus (fluid). 2  One of the roles cervical mucus plays is to help the sperm travel up through the uterus and into the fallopian tubes. 3  When your cervical fluid has a creamier consistency, resembling egg whites, it is a sign that you are near ovulation or are ovulating.he average menstrual cycle is usually between 28 and 32 days; therefore women with a 28-day menstrual cycle usually ovulate between days 13 to 15 â about two weeks after the start of the menstrual period.