Yes, they eat plankton, but get 90 % of their food
from their symbiotic algae.
Some of the colors of both species come
from symbiotic algae that live inside the coral animal's cells.
Adult corals of the species Pocillopora damicornis get most of their nutrition
from symbiotic algae that live inside them, providing metabolic energy by photosynthesis.
Not exact matches
He and his colleagues had been working there since 2007, taking samples seasonally
from six colonies of Orbicella faveolata, also known as mountainous star coral, and their associated
symbiotic algae.
Researchers
from the University of Southampton and the New York University Abu Dhabi identified the
symbiotic algae in corals
from Abu Dhabi, United Arab Emirates, the world's warmest coral reef habitat.
One such effect, called bleaching, occurs when the
symbiotic algae that are essential for providing nutrients to the coral either lose their identifying photosynthetic pigmentation and their ability to perform photosynthesis or disappear entirely
from the coral's tissue.
Professor Brockhurst said the team, which also included researchers
from the University of Sheffield, tested the
symbiotic relationship of the protozoa and
algae across gradients of different light intensity.
Cut off
from their oceanic relatives for millions of years, the golden jellies, Mastigias papua etpisoni, have lost much of their sting and evolved a
symbiotic relationship with
algae that live in their tissues, lending their eponymous golden color.
Researchers indicate that the warmer water temperatures are stressing corals and increasing the number of bleaching events, where corals become white resulting
from a loss of their
symbiotic algae.
Exploiting habitats that are often or mostly out of water required new
symbiotic relationships to contain and move water, including the fusion of some fungi and
algae to create lichen in communities with bacteria that survive extreme desiccation on land while breaking down rock into soil, and the association of mycorrhizae fungi and the root tissue of new vascular plants — culminating in trees that pump water high into the air — to exchange mineral nutrients (e.g., phosphorus) and usable «fixed» nitrogen
from the atmosphere for photosynthetic products.
They found that many corals died immediately
from the heat stress, but others died more slowly following the depletion of their zooxanthellae — the yellowish brown
symbiotic algae that live within most reef - building corals.
Coral bleaching occurs when corals become stressed by warmer - than - normal water, causing them to expel
symbiotic algae that live in their tissues,
from which they get their energy.