 In the past, Morskie Oko was called "Rybie Jezioro" ("Fish Lake") due to its natural stock of fish, which are uncommon in Tatra lakes and ponds.In the clear depths of the water, one can easily notice
trout - so called "famine" trout - that live in the lake.The name "Morskie Oko" ("Sea Eye", "Eye of the Sea") is derived from an old legend, according to which the lake was connected to the sea via an underground passage.