Cātumasutta

mn67:14.1 Then the Buddha said to the mendicants:

mn67:14.2 “Mendicants, when you go into the water you should anticipate four dangers.

mn67:14.3 What four?

mn67:14.4 The dangers of waves, gharials, whirlpools, and sharks.

mn67:14.5 These are the four dangers that you should anticipate when you go into the water.