Sea lilies and feather stars are some of the most beautiful and delicate creatures in the oceans. Many of these animals resemble feather dusters, with the “feathers” colored orange, yellow, green, or other hues.
They’re also among the oldest sea creatures. Their ancestors date back hundreds of millions of years. Because of that, they’re sometimes called “living fossils.”
Sea lilies and feather stars are crinoids. They’re related to sea stars, urchins, and cucumbers. There are about 600 species in all.
The singing of blue whales has long held scientists’ fascination, but researchers are still learning how, when and why whales sing. Now biologists have connected the time of day that blue whales sing to the time they begin their long migration south.
