229 Results From "marine mammal "

A side view of a great white shark. Regional endothermy in fish has been seen in apex predators like the great white sharks or giant tuna.
Environment

Megalodon’s warm-blooded relatives are still circling the oceans today

a close-up of an octopus eye
Environment

Why counting octopus ‘rings’ is crucial

footprint in desert sand
Science

Humans may have arrived in the Americas 15,000 years earlier than we thought

A bat sea star on a dark background.
Environment

The blueprints for early organs may be hiding in sea stars

An artist's illustration of a megalogon, which went extinct 3.6 million years ago and are believed to have grown to lengths of 50 feet.
Science

Megalodons were likely warm-blooded, despite being stone-cold killers

A tiny fish is more genetically diverse than we thought. Here’s why that matters.
Environment

A tiny fish is more genetically diverse than we thought. Here’s why that matters.

megalodon
Environment

Could an ancient megashark still lurk in the deep seas?

Whitespotted eagle ray swimming in the ocean.
Environment

Scientists test different gear for protecting clams from ‘crunching’ rays

sperm whales seen from above
Environment

Sperm whales have a surprisingly deep—and useful—culture

A sea otter resting in a kelp bed in Monterey Bay, California.
Environment

Sea otters can help conserve vital kelp forests

an old fashioned sketch of someone drinking out of a small glass on a green background with blue polka dots and a drawing of an eyeball
Science

People used to drink a very specific kind of urine to treat motion sickness

Pair of Asian short-clawed otters
Environment

These otters learn how to snag snacks by watching their friends

What does sleep mean for animals?
Environment

What does sleep mean for animals?

A photo of salmon in the water.
Environment

There are too many pink salmon in the Pacific

Paramecium bursaria under a microscope. All creatures whose cells house a nucleus, including Paramecium bursaria, can be traced back to a common ancestor called the Last Eukaryotic Common Ancestor (LECA).
Science

Newfound single-celled hunters may have been Earth’s first-ever predators

The mysterious ‘Tully monster’ didn’t have a spine after all
Science

The mysterious ‘Tully monster’ didn’t have a spine after all

Dipping shortening-covered hands in ice water
DIY

Stay-at-home science project: Craft handmade blubber

Members of the Dutch Tall Ship Oosterschelde wave goodbye from the quay in Rotterdam on August 4, 2023. The Rotterdam ship departs for a two-year world tour that scientist Charles Darwin made two centuries ago.
Environment

Mission to recreate Darwin’s scientific Beagle voyage sets sail

A tidal stream energy generator called the O2, made by Orbital Marine Power Ltd, extracts energy from the tides off the coast of Scotland and feeds it into the electric grid.
Environment

Testing the waters: Scotland surges ahead on ocean Power

Ankylosaur in blue floatie and life vest riding the ocean waves. Prehistoric trees and a full moon are in the background. Illustrated.
Environment

Why dinosaurs were terrible swimmers