Types of Plankton: Illustrated Guide to Marine Microorganisms #194404 (License: Personal Use)

This hand-drawn illustration identifies major plankton groups: copepods (small crustaceans), chain-forming and single diatoms (photosynthetic algae), an immature sea star (larval echinoderm), a gelatinous immature jelly, and a worm-like larva. Each organism is labeled clearly, emphasizing morphological diversity within planktonic communities. The sketch serves as an accessible teaching aid for introductory marine science.

Used in educational web pages, biology lesson plans, or museum exhibits to introduce plankton taxonomy and ecology; matches user intent for learning basic marine biology concepts or preparing classroom materials.