The word sa-samudra means near the sea. The reservoir of water was like a bay, for it was not very far from the sea. The word upa, meaning more or less, is used in many ways, as in the word upapati, which indicates a husband more or less, that is to say, a lover who is acting like a husband. Upa also means greater, smaller or nearer. Considering all these points, the reservoir of water which was seen by the Pracetas while they were traveling was actually a large bay or lake. And unlike the sea or ocean, which has turbulent waves, this reservoir was very calm and quiet. Indeed, the water was so clear that it seemed like the mind of some great soul. There may be many great soulsjnanis, yogis and bhaktas, or pure devotees, are also called great soulsbut they are very rarely found. One can find many great souls amongst yogis and jnanis, but a truly great soul, a pure devotee of the Lord, who is fully surrendered to the Lord, is very rarely found (sa mahatma sudurlabhah, Bg. 7.19). A devotees mind is always calm, quiet and desireless because he is always anyabhilasita-sunyam [Madhya 19.167], having no desire other than to serve Krsna as His personal servant, friend, father, mother or conjugal lover. Due to his association with Krsna, a devotee is always very calm and cool. It is also significant that within that reservoir all the aquatics were also very calm and quiet. Because the disciples of a devotee have taken shelter of a great soul, they become very calm and quiet and are not agitated by the waves of the material world.