Oceans

The rocky beach in Wrangell, Alaska, is decorated with more than 40 petroglyphs.

The Mystery of This Petroglyph-Covered Alaskan Beach

The 8,000-year-old rock carvings were likely created by the Tlingit

Sargassum is not a new problem. But the mass of floating seaweed in the Atlantic Ocean is getting bigger, according to scientists.

A 5,000-Mile-Wide Mass of Seaweed Is Heading for Florida and Mexico

Known as sargassum, the algae can hurt tourism as it piles up on beaches and starts to rot

Industrialization changed Italy’s Bagnoli Bay. Analyzing the DNA that was trapped in sediment offers a record of what was lost—and a clue as to how to get it back.

DNA Buried in Sediment Helps Scientists Picture Past Ecosystems

Examining the evidence offers a way to look back at now damaged environments

Joseph Dituri is spending 100 days underwater for scientific research.

Meet the Man Spending 100 Days Underwater for Science

Joseph Dituri aims to set a world record, conduct research and inspire students to conserve the oceans

Killed by red tide, thousands of dead fish float in the Boca Ciega Bay in Madeira Beach, Florida, in July 2021. The harmful algae blooms are once again killing fish along Florida's southwest coast.

Toxic Red Tide Is Back in Florida—Here's What to Know

Caused by an overgrowth of algae, the blooms can be harmful to humans, pets and marine wildlife

Conference president Rena Lee of Singapore announces an agreement was reached on Saturday.

Historic Treaty Protects Marine Life in the 'High Seas'

The United Nations agreement will help conserve 30 percent of the planet’s oceans by 2030

Many animals like corals release eggs and sperm into the water on just the right nights of the month.

How Lunar Cycles Guide the Spawning of Sea Creatures

Researchers are starting to understand the biological rhythms that sync worms and corals to phases of the moon

Tourists on a cruise spotted a rare, giant phantom jellyfish in Fournier Bay of Anvers Island off the Antarctic Peninsula last year.

How Vacationers on Antarctic Cruises Are Filling in Scientific Gaps

From ships and submarines, citizen scientists can access remote areas ripe for new discoveries. But does the research make up for the climate impact?

Scan of a porpoise head showing the phonic lips, which help produce echolocation clicks, and the round, fatty melon that conducts sound into the water

Some Whales Use a Creaky 'Vocal Fry' Voice to Find Food

Like humans, toothed whales have three vocal registers: chest, falsetto and vocal fry

A digital reconstruction of a humpback whale trap feeding, a behavior with striking similarities to the feeding habits of the "hafgufa" described in medieval Norse texts.

These Mythical Sea Monsters May Have Been Whales With Unusual Dining Habits

Tales of creatures like the Norse “hafgufa” suggest ancient and medieval people may have seen whales trap feeding

A father shows his son the awful-smelling algae hugging the shoreline of the St. Lucie River during a summer bloom in Stuart, Florida, in 2016. The algae fouled coastal waterways, created angry communities, closed beaches and had an economic impact as tourists and others were driven away by the smell and inability to enjoy the waterways.

Florida’s Love-Hate Relationship With Phosphorus

The state has mined and abused the Devil's Element for decades, and now it is increasingly fouling precious coastal waters

Snapping shrimp create an air bubble in the water when they clamp their claws shut.

These Young Shrimp Can Snap Their Claws as Fast as a Speeding Bullet

Juvenile snapping shrimp can achieve the fastest acceleration of any repeatable, underwater motion by a living thing, per a new study

Balloons can pollute the oceans, harm wildlife and get tangled in power lines.

Seaside California City Bans Balloons in Public

Laguna Beach has joined several other cities taking aim at ocean pollution, wildlife health, power outages and wildfires

Members of the Australian National Antarctic Research Expedition raise the Australian flag over Heard Island on December 26, 1947.

See Rare Images of Early 20th-Century Antarctic Expeditions

For the first time, hundreds of photos, lantern slides and glass plate negatives are available to the public

Untold tsunamis hit coastal communities before anyone logged them in written records. Paleotsunami researchers are on a quest to uncover these forgotten disasters.

These Tsunami Detectives Search for Ancient Disasters

The gigantic waves have been decimating coastlines since time immemorial. We ignore these prehistoric warnings at our own peril.

The Mexican government has banned shark-related tourism activities, including cage diving, at Guadalupe Island.

Mexico Bans Great White Shark-Related Tourism on Guadalupe Island

The government cited bad practices in the industry as a reason for the ban, which has sparked concerns for the local economy

Whales are tricky to see from a satellite. Belugas, with their light skin standing out against the water, are a bit easier to spot.

Can Satellites Really Detect Whales From Space?

Distant identification of whales is improving rapidly, but finding the behemoth creatures is still surprisingly tricky

Archaeologists found saffron, as well as peppercorns, almonds, raspberries and other foods.

Medieval Pantry Stocked With Spices Found in 500-Year-Old Shipwreck

The vessel, called "Gribshunden," sank off the coast of Sweden in 1495

The crack called Chasm-1 had been dormant for decades until 2012. Now, it has created a new iceberg.

Iceberg Twice the Size of New York City Breaks off From Antarctica

The event was expected and not linked to climate change, researchers say

Since 1970, the oceans have sunk about 90 percent of the excess heat from the atmosphere.

Oceans Break Record for Highest Temperatures Four Years in a Row

Warming oceans can drive sea-level rise and extreme weather

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