It has been observed that predators tend to select the most common morph in a population or species.
Such predators tend to hide in the cattails and other tall, thick grass surrounding natural water features.
Their most common predators are birds since they tend to invade nests among other things.
Low-density populations, predators, and waves from high-powered storms tends to impede the repopulation of Diadema antillarum.
Aquatic predators also tend to have a lower death rate than the smaller consumers, which contributes to the inverted pyramidal pattern.
Of course some-thing that lived that far down would be photoreactive; this was how most benthic predators tended to lure one another, through self-emitted light.
Some non-venomous and non-poisonous animals have exploited the fact that predators tend to avoid warningly coloured individuals.
Moreover, since predators tend to kill sick and weak members of prey populations, these populations have become less healthy over all.
This combination is especially effective in resisting predation, as predators tend to exert compression on the outer layer, and tension on the inner.
In general, large predators tended to shy completely away from anything that was not familiar, at the most watching it from a distance.