Why we should not feed the fish?

     It's an entertaining and interactive marine experience for the diver, and an easy meal for those beautiful fish, so what's the problem? It's now generally accepted that despite being a"once in a lifetime experience", feeding marine fish is bad idea for everyone, including divers, fish and the ecosystem. The Green Fins (The organization that help to protect and conserve coral reefs) 4Deadly D's explains why we should not feed fish or throw food leftovers and waste into the sea
     1) Disruption of ecological processes, over time this activity can change the behavior of the fish as they learn of connect divers, snorkelers, and boats with feeding time. Marine life maintains an intricate balance of ecological relationships and behavior. Unnatural feeding encourages species that would never usually come into contact with humans to interact. This may result in serious injury and harm to individuals. Upsetting such complex and unique systems can lead to measurable negative impacts.
     2) Disadvantageous health impact to fish, when fed, fish may stop natural feeding cycles which are important to ensure they are receiving the correct nutrients to survive. Over a prolonged period, fish conditioned to accept a free meal from a diver could become under nourished, stressed or in some cases, death.
     3) Danger to humans, attacks and bites have been increasingly reported by fish feeders and others in the vicinity because marine life mistake divers actions for handouts, or the marine life lose their natural wariness of humans underwater. There was highly publicized case of a resident moray eel in the Similan islands trained to eat sausages by visiting divers, one day it mistook a diver's thumb for a sausage and bit entire thumb off.
     4) Damaging the environment, many fed species like grouper and small sharks are predators whose feeding habits provide key roles in the delicate balance of life on coral reefs and other marine habitats. By supplementing the diet of these fish, we interrupt this important natural balance. There is much evidence today in Thailand that fish feeding is increasing the severity and rate of the coral eating Crown of Thorns starfish outbreaks.
     Khao Lak Scuba Adventures and Green Fins asks all tourists, divers and boat crew not to feed fish anywhere, to throw your left over lunch into the bin and to ensure that rubbish is taken off the boat and disposed of responsibly. It's not allowed to feed fish in National Parks around Thailand.