Peru's coastal ecosystem is only one of the country's amazing features. But travelers don't need passports, expensive plane tickets, or heavy suitcases to examine the biodiversity of coastal Peru. Armed with a field trip log and graphic...

Some species of fish are more closely related to humans than they are to other species of fish! How did so many species, that aren't closely related, develop the same body shape? A short video explains the evolution of fish. 

One of the most abundant fossils on earth confused paleontologists for more than one hundred years. Viewers learn about the mystery and discoveries related to conodonts in a video from PBS as part of its Eons series.

Shocking! Share the story of electric fish with young biologists for a fascinating lesson in specialized cells. The narrator of the video describes how some species of fish generate electric current, differentiates between weakly and...

Shark teeth in Idaho, China, and Russia confused scientists for hundreds of years. A spiral of sharp teeth presented the first clue, but where would they even go on a shark? Learn more about the strange case in a video that is part of a...

The pressure at the bottom of the ocean is 10,000 times that at sea level. Scholars go under the sea as they learn about organisms found in the deep ocean waters. From angler fish to deep sea jellies that bioluminescence, viewers see...

About 70 percent of the genes of the stickleback fish are the same as humans. In the video, scholars further explore the stickleback fish and its history, from being removed from Loberg Lake to their change and comeback. Over time, these...

The dynamic cuttlefish is known as the chameleon of the sea. They are able to change their skin at will according to their surroundings and situations. Watch this video to learn how they camouflage and eat!

Playing with balloons, water, oil, and bottles help put this lesson over the top! Participants use air-filled balloons in water tanks to experience gas compression. They also use oil-filled bottles to experiment with buoyancy. Included...

Information is provided on Gray's Reef, Florida Keys, and Flower Garden Banks marine sanctuaries. Young marine biologists then visit the FishBase and REEF databases to collect fish species information for each location. They then...

Learning to read data tables is an important skill. Use this resource for your third, fourth, or fifth graders. Learners will will study tables of fish collection data to draw conclusions. The data is based on fish environments in the...

Focusing on the fish in the Hudson River Estuary, this activity could be used to practice reading, graphing ,and critical-thinking skills. Answering the 6 questions should be interesting for students due to the interesting subject matter.

Ever wonder how scientists track fish underwater? Your class can learn how with this informative worksheet. First, they will read a paragraph about androgynous fish, tagging, and data analysis. Then, your scientists must answer five...

During The Great Dying, 90 percent of life in the ocean died. A video lesson from the PBS Eon series describes how the oceans recovered. Viewers learn how some species adapted and thrived while others became extinct.

Yikes, parasite eggs have been found in mummy remains! Scientists now know where they come from, but that doesn't always stop them. Learners explore the battle between parasites and hosts and how they strive to stay one step ahead of...

Many people know in cases with a lot of in-breeding, the species becomes weak and less likely to survive long term. Now learn about how out-breeding also leads to the same result. The second of five videos on Evolution and Speciation...

Today very few animals exist with both an endoskeleton and exoskeleton. Yet, in the Devonian period, a large number of fish species lived with both. Scientists debate if they were for protection or mineral storage, because none of them...

Many species find breathing a convenient way to survive. The PBS Eons series explains how fish learned to breathe air. It details what scientists know about evolutionary history as well as many species that developed this skill...

Learn what makes a shark a shark and their classifications in a video presentation. The focus of the presentation is an exploration of the unique species of sharks from different orders.

How did life evolve from fish to four-limbed animals? Work through an interactive exploring transition animals and comparing their features to understand the transition. Making it even better, the interactive allows scholars to isolate...

Have you ever wondered how to paralyze a fish? The cone snail produces venom that works, but what happens at a molecular level? A calcium channel blocker prevents muscle movement, enabling the slow-moving snail to catch faster, larger...

When you get to the heart of the matter, you learn a lot about an organism by studying its circulatory system! A perfect resource for a zoology or anatomy class, the simulation gives users a peek inside a variety of vertebrates to...

It's often said that imitation is the sincerest form of flattery. Young engineers learn about biomimicry, which uses nature to generate engineering ideas, in the fifth lesson of nine in a Life Science unit. Working in groups, they select...