Definition

Noun: A type of soft coral (an animal in the order Pennatulacea) that forms a colony shaped like a feather. It is a marine organism that lives anchored in the seafloor.

Usage

The term "sea feather" is used specifically in marine biology and nature contexts to describe this particular colonial coral organism. - It is typically used as a countable noun. - It often appears in descriptive texts about ocean life, coral reefs, or underwater ecosystems.

Examples

• Noun:
  • We saw a beautiful sea feather gently swaying in the current during the dive.
  • The biologist carefully documented the new species of sea feather found in the deep sea.
  • Unlike hard corals, a sea feather is soft and flexible.

Advanced Usage

• The term is used scientifically to refer to members of the sea pen order (Pennatulacea). In this context, "sea feather" describes the physical form of the colony.
  • The research paper focused on the bioluminescent properties of the sea feather.
• It can be used poetically or descriptively in non-scientific writing to evoke the delicate appearance of the organism.
  • The garden of the reef was dotted with sea feathers, looking like quills dropped by a giant.

Variants and Related Words

• Sea pen (n): The more common general term for the same order of colonial marine animals. A "sea feather" is a type of sea pen with a specific feather-like shape.
• Pennatulacean (n/adj): The formal scientific adjective or noun relating to the order Pennatulacea, which includes sea feathers and other sea pens.

Synonyms

• Feather coral (n): A less common synonym emphasizing the coral-like nature and feathery shape.
• Pennatulid (n): A technical synonym for any member of the order Pennatulacea.

Notes on Meaning

The meaning of "sea feather" is specific and literal, referring directly to the marine animal. It does not have common idiomatic or metaphorical uses. Its meaning is consistent across contexts, primarily biological or descriptive.

Noun

1. corals forming featherlike colonies