English of Core Text: “The great tanninim” — thus they translated: the sea-reeds (or sea-monsters). And Rabbi Yochanan said: This is Leviathan the straight serpent and Leviathan the coiled serpent.
On the daf / in context: In the long aggadic section on the sea and its creatures, the “great tanninim” are identified either as ordinary large sea creatures or specifically as the Leviathans.
Type of Learning: Custom (identity of the great tanninim)What Is Learned: The great tanninim are understood either as large sea creatures or as the Leviathan pair.