Topic: Marine Biology

Current Event October 28, 2020

Penguin Evolution

Animals Climate Change Evolution Marine Biology

When people think of penguins, they often imagine them waddling on ice and sliding into freezing water. Some species of penguins, though, live in warm climates, and that has scientists wondering how penguins manage to adapt to such different environments. Recently a study was released that provides some answers. Listen to learn where scientists believe penguins first evolved, what powered their migration, and how their bodies have adapted to a wide variety of environmental conditions.

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Science

Searching for Bowhead Whales

Animals Oceans Marine Biology

The bowhead whale lives its entire life - which amazingly can span over 200 years - in the frigid Arctic waters near the North Pole. The bowhead whale is unlike most other whales as it doesn’t seasonally migrate in search of warmer waters. A thick layer of blubber and the ability to hold its breath for up to 30 minutes makes it possible for bowhead whales to live in the deep, freezing water. Listen to hear even more incredible facts about this unique ocean mammal.

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Science

Polar Bears’ White Fur

Animals Diversity and Adaptation Light Marine Biology

Polar bears live near the North Pole, a frigid region covered by white ice and snow. The bears are protected by their thick, white fur. But what makes a polar bear’s fur white? In this episode of Earth Rangers, an expert on polar bears reveals that the hair of polar bears is actually translucent, with only small amounts of white pigment. Listen to a scientist explain what is responsible for the white color of polar bears’ fur—and why the fur sometimes changes color.

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Science

The Science of Whiskers

Animals Diversity and Adaptation Marine Biology

Animals use their whiskers for more than just looking cute. This audio story features an interview with a scientist who studies how whiskers are used by different animals. Listen to hear how animals use whiskers to learn about the world around them and about an experiment that helps scientists learn how whiskers work.

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Current Event May 5, 2020

Snapping Shrimp Growing Louder

Animals Climate Change Human Impacts Oceans Ecology Marine Biology

Snapping shrimp produce surprisingly loud noises by clicking their claws. The noises they make are so pronounced that they once led to a Navy investigation. Ocean warming is causing the snapping shrimp clicks to become even louder and more frequent. The increase in ocean noise from this and other human impacts can be disruptive to marine ecosystems where sound is important to survival. Listen to hear what snapping shrimp sound like and learn why their sounds might be helpful to some species and harmful to others.

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