sentence: Sardines have a short life-cycle, living only two or three years.
sentences_after: Adult sardines, about two years old, mass on the Agulhas Bank where they spawn during spring and summer, releasing tens of thousands of eggs into the water. The adult sardines then make their way in hundreds of shoals towards the sub-tropical waters of the Indian Ocean. Huge numbers of sharks, dolphins, tuna, sailfish, Cape fur seals and even killer whales congregate and follow the shoals, creating a feeding frenzy along the coastline.
concept_name: sardine
headings: Shoaling and schooling Predator avoidance
categories: Fish Ecology