It's not a coral. It is a plant, a fern. The local name of this fern is Paku langsuyar or Semun bidari (Malay). It is a frequent epiphyte on old trees in the lowlands and foothills, and rather common on planted rubber trees. The spongy mass of old fronds and hairy roots usually makes a good nest for ants. Snakes, rats, and other small animals often make a home among the erect nest leaves in the rainforest.
Platycerium ferns are also known as Staghorn ferns and are popular as ornamentals, prized for their pendulous, decorative fronds.
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