by killing the corals and eating it
They eat them.
To corals yes............
It cause by the volcano erupt
When the red-knobbed starfish is young, it will eat algae, but as it grows it will eat soft corals, sponges, tubeworms, clams, starfish and other invertebrates.
dynamite fishing.
they eat them because one throne starfish can eat more than 40 square kilo metres in a year or coral
starfish, seaweed, corals, sponges, algae, sea-shells.
In general, corals, anemone's, starfish, snails, reef fish.
While most starfish feed primarily on mollusks, there are some varieties that prefer other invertebrate animals including hard corals. The crown of thorns starfish has fed on large portions of the coral reefs throughout the Indo-Pacific region.
"Abiotic" (not living) things are temperature, turbidity, pollution, destruction. Corals are very specific about the temperatures at which they can survive; reef corals especially so. Reef corals have zooxanthellae in their tissues, which require light. Turbidity reduces light. Pollution, such as heavy metals or halogenated hydrocarbons poison, the corals or their symbiots directly.Nutrient pollution, such as nitrates or phosphates, encourage growth of algae which can over grow the corals or increase turbidity. "Destruction" covers many things like storm surge, dredging, earthquakes, or boats dragging their anchors.
invertebrates are animals which do not have a skeleton made up of bones . Some examples of invertebrates are - Jellyfish , Corals , Starfish , Sponges , Crabs and Shrimps
Geologist are concerned that this dust along with the fungi, toxic chemicals and microbes that it carries, may infect corals with disease or in some other way inhibit their life processes. Wind blown dust can contribute to the destruction of coral reefs.