Tides

Ship Under a Bridge

Ocean conditions change every hour of every day. Tides, currents, and winds are constantly in flux. NOAA’s real-time data helps huge ships navigate safely under bridges and around obstacles. Explore other videos that capture...
An algal bloom, also known as a red tide, has converted the ocean's surf to a red color

Scientists Work to Predict and Prevent Algae Blooms

Harmful algal blooms are dangerous, producing toxins that can kill marine organisms, taint shellfish, cause skin irritations, and even foul the air Credit: Flickr User AJC1 Algae, like all organisms, normally grow in balance...

Currents, Waves, and Tides: The Ocean in Motion

Credit: Yasmine Abulhab At the entrance of most beaches, there is a bulletin board with notices about water conditions: maybe a faded sign warning about rip currents and a list of this week's tide...

Ocean Currents: Motion in the Ocean

When you look underwater, what is making the seagrass wave in the water? The answer is ocean currents . Ocean currents are continuous movements of water in the ocean that follow set paths, kind...