Definition

Noun: A small aquatic crustacean of the subclass Ostracoda, characterized by a shrimp-like body completely enclosed within a bivalve (two-part) shell. They are found in both marine and freshwater environments.

Usage and Examples

• Noun:
  • Scientists study seed shrimp to understand changes in ancient water quality, as their shells are preserved in sediment.
  • Under the microscope, the seed shrimp can be seen swimming with its appendages extended from its shell.
  • A single drop of pond water may contain several seed shrimp.

Advanced Usage

• In Scientific Context: The term is commonly used in paleontology and ecology. Their fossilized shells, called "ostracods," are important for dating rock layers and reconstructing past environments.
  • The core sample was rich in seed shrimp fossils, indicating a deep marine past for this region.

Variants and Related Words

• Ostracod (n): The formal scientific name for a seed shrimp.
  • Ostracods are a class of crustaceans.
• Mussel Shrimp (n): Another common name for the same animal.

Synonyms

• Ostracod (Scientific synonym)
• Mussel shrimp (Common name synonym)

Notes on Meaning

This term refers specifically to the entire organism. While "shrimp" is part of the name, they are not true shrimp but a distinct type of crustacean. The "seed" in their name likely refers to their small, seed-like size and shape when the shell is closed.

Noun

1. tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell