For thousands of years, cod and other bottom-feeding fish were the top predators in the system.
The omnivorous creatures can live for more than 50 years, feeding on fish, insects and water plants.
It was feared that by feeding on small local fish, rather than its usual diet of squid, it would become dehydrated.
Off Palm Beach, Miami, marine developer US Submarines is building a six-room habitat 30 m below, complete with cooking facilities, lounges and fish-feeding stations.
The salt lakes fill with fresh water, and millions of water birds - pelicans, stilts, shags and gulls - can be seen feeding on the superabundant fish and insect life.
When gorillas go into a market, smaller companies survive by feeding on leftovers, like pilot fish that swim safely alongside sharks.
The lady at the fish store berated me for constantly feeding them.
The waters also support the UK's only resident population of killer whales and two feeding and breeding hotspots for basking sharks, the world's second biggest fish.
We had fish food on the boats, and since then we've been feeding them three to four times a day.
Because fish stocks throughout the world are falling, driving up the prices of fish meal, and cotton production is rising, driving down the price of cottonseed, feeding cottonseed to catfish works for farmers of both cotton and catfish.
The changes, the company has said, mean its plans are more fish-friendly and will reduce the amount of inter-tidal mud flats that will be lost to feeding birds.
The changes, the company has said, mean its plans are more fish-friendly and will also reduce the amount of inter-tidal mudflats that will be lost to feeding birds.
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