Like shoals of fish darting before some big-bellied dolphin,
escaping, cramming the coves of a good deepwater harbor,
terrified for their lives – he devours all he catches –
so the Trojans down that terrible river’s onrush
cowered under its bluffs.
– Homer
The Iliad, Book 21, lines 25-29. Frightened for their lives by Achilles, the Trojans are likened in a magnificent epic simile to shoals of fish fleeing a huge dolphin as they try to hide in the river banks.