Ran is the name of Ægir's wife, and their daughters are nine, even as we have written before. At this feast all things were self-served, both food and ale, and all implements needful to the feast. Then the Æsir became aware that Rán had that net wherein she was wont to catch all men who go upon the sea.
Her net is also mentioned in Reginsmál and in the Völsunga saga, where she lends it to Loki so that he can capture Andvari. She is also associated with the practice of sailors bringing gold with them on any voyage, so that if they drowned while at sea, Ran would be pleased by their gift. 
Whether men drowned by her doing or not, she appears to have received those drowned at sea, as exemplified in the section called Hrímgerðarmál in the Eddic poem Helgakviða Hjörvarðssonar, where the giantess Hrímgerðr is accused of having wanted to give the king's warriors to Rán, i.e. to drown them:
"Rán and the Wave Girls" (1831) from Alkuna: Nordische und nordslawische Mythologie.
In addition, Snorri says in Skáldskaparmál that "Rán's husband" (verr Ránar) and "land of Rán" (land Ránar) are kennings for the sea. Furthermore, her close association with the sea permitted the kenning for gold "brightness of the sea" to be rendered as "brightness of Rán" (gull er kallat eldr eða ljós eða birti Ægis, Ránar eða). Not surprisingly, the sea was also referred to as "Rán's road" (Ránar vegr), as in the following stanza by the skaldNjáll Þorgeirsson quoted by Snorri: