Friends or Foes? Sponges and ascidians overgrowing corals: The new challenge for reef fishes

Latest update July 29, 2019 Started on November 1, 2018

Coral reefs are shifting toward environments dominated by sponges and ascidians in Papua New Guinea. We will witness how one of the most diverse fish communities in the world could adapt in a sponge and ascidians dominated environment.

November 1, 2018
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Cracking the riddle: sponge identification

Soon we will start identifying the sponges from Papua New Guinea. To accurately describe these organisms it is crucial to keep track of their shape, colour and texture when the specimens are alive; and to obtain some samples of their tissue. Tissue samples can be used to observe spicules which are hard and sharp needle shape structures that protect and provide support to the body of the sponges. The description of these parts will help us to start cracking the riddle.

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