Algae (/ ˈældʒiː / ⓘ AL-jee, [3] UK also / ˈælɡiː / AL-ghee; sing.: alga / ˈælɡə / ⓘ) are any of a large and diverse group of photosynthetic organisms. It excludes the land plants (embryophytes). Such …

1 day ago · Algae, a diverse group of eukaryotic photosynthetic organisms that range from single cells to massive kelp.

Aug 9, 2025 · Algae are a group of autotrophic, non-vascular thalloid plants with unicellular or multicellular, non-jacketed sex organs without any formation of an embryo.

Sep 11, 2024 · Learn about algae in biology. Get examples and discover their definition, classification, characteristics, and importance.

4 days ago · Reflections on algae in the Lincoln Memorial Pool (and elsewhere) Two Northeastern University experts explain what algal blooms are all about and what is — and isn’t — cause for …

Jun 19, 2026 · The shallow, sunny waters of the reflecting pool are an ideal incubator for algae growth in the summertime. Experts say the recent renovation may have helped accelerate it.

May 22, 2026 · Algae are simple, chlorophyll bearing and photosynthetic organisms. They may be microscopic unicellular forms or large multicellular seaweeds. Phytoplankton are small algal forms …

Jun 21, 2026 · The recent algae bloom in the National Mall's Reflecting Pool highlights a common issue with these diverse, photosynthetic organisms. While often a nuisance, especially toxic cyanobacteria, …

Algae (singular alga) are a large and diverse group of photosynthetic, eukaryotic, plant -like organisms that use chlorophyll in capturing light energy, but lack characteristic plant structures such as leaves, …

Jun 4, 2016 · Algae are a diverse group of aquatic organisms that have the ability to conduct photosynthesis. Certain algae are familiar to most people; for instance, seaweeds (such as kelp or …