Pocillopora meandrina
Cauliflower coral from Indo-Pacific shallow reefs.
Pocillopora meandrina, called cauliflower coral, lives in shallow reef habitats across the Indian and Pacific Oceans. Its colonies can be quite solid and dome-shaped, or they may branch out, with parts that are flattened and ridge-like or fine and twisted. Wart-like growths known as verrucae cover the colonies. The coral’s colour ranges from brown to pink, and its polyps, with their tentacles extended, are typically only seen at night.
This species is found in a variety of settings, including exposed reefs, protected lagoons, and lower reef slopes. Each polyp is a hermaphrodite, containing four sets of male and four sets of female gonads. Larvae develop inside the polyp’s body and are not released into the water until they are mature. After that, they swim freely for several weeks before settling down and beginning to build a hard skeleton. Polyps can also reproduce asexually through fragmentation.
To feed, the polyps capture tiny prey with their tentacles. They also host microscopic algae called zooxanthellae, which perform photosynthesis. These symbiotic algae produce energy-rich compounds that the polyps use, while the coral’s rigid structure offers the algae a stable, well-lit, and protected environment in shallow water.
Quick Facts
- Genus
- Pocillopora
- Species
- meandrina
Facts from the source article.
Lore & Background
Pocillopora meandrina forms colonies that can be fairly solid and dome-shaped or branching, with areas that are either flattened and ridge-like or fine and convoluted. The colonies are covered by wart-like growths called verrucae. Its colour ranges from brown to pink, and the polyps with their extended tentacles are usually visible only at night.
This coral occurs in the Indian and Pacific Oceans and is found across a range of habitats including exposed reefs, protected lagoons and lower reef slopes. It is a hermaphrodite, with each polyp containing four sets of male and four sets of female gonads. The larvae develop inside the body of the polyp and are not expelled into the water until they are mature, remaining free swimming for a number of weeks before settling and starting to build a hard matrix. The polyps can also reproduce asexually by fragmentation.
The polyps feed by capturing tiny prey with their tentacles. They also contain zooxanthellae, microscopic algae that are able to photosynthesise. These symbionts produce energy-rich compounds which the polyps metabolise, while the rigid structure of the shallow water coral provides a stable, well-lit, protective environment for the algae to flourish.
Reader's Guide
Pocillopora meandrina is significant as a shallow reef-building coral in the Indo-Pacific and Pacific oceans. Its ability to reproduce both sexually as a hermaphrodite and asexually through fragmentation allows it to colonize a variety of reef habitats, from exposed reefs to protected lagoons and lower reef slopes. The coral's symbiotic relationship with zooxanthellae is central to its biology: the algae photosynthesize and produce energy-rich compounds that the polyps metabolise, while the coral's rigid structure provides a stable, well-lit environment for the algae. This mutualism enables the coral to thrive in shallow waters. The species is also notable for its distinctive verrucae, or wart-like growths, and its nocturnal polyp activity, with tentacles usually visible only at night. Its larvae develop internally and are released as mature, free-swimming individuals, a reproductive strategy that contributes to its dispersal across a wide geographic range.
Did You Know?
- Pocillopora meandrina is commonly known as cauliflower coral.
- The polyps feed by capturing tiny prey with their tentacles and also contain zooxanthellae for photosynthesis.
Frequently Asked Questions
What is Pocillopora meandrina?
Pocillopora meandrina is a shallow-water reef coral most often called cauliflower coral. Its colonies can take on solid dome shapes, branching forms, or flattened ridge-like structures, and the surface is typically covered in small wart-like bumps known as verrucae.
What does Pocillopora meandrina look like?
The coral's colour shifts from brown to pink depending on the individual colony. Its polyps and their tentacles are usually tucked away during the day and only become visible when they extend at night.
Where does Pocillopora meandrina live?
It is found across shallow reef habitats in both the Indian and Pacific Oceans. Its range includes fully exposed outer reefs, sheltered lagoons, and lower reef slopes, showing a broad tolerance for different water-energy conditions.
How does Pocillopora meandrina reproduce?
Each polyp is hermaphroditic, carrying four sets of male gonads alongside four sets of female gonads. Larvae mature inside the polyp and are then expelled, while the coral can also spread asexually when colony fragments break off and settle in a new spot.
How does Pocillopora meandrina get its food?
It snags tiny planktonic prey with its tentacles, but it also depends on symbiotic zooxanthellae living within its tissues to generate energy through photosynthesis. This dual strategy lets it thrive in a wide range of reef settings.
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