Choose Learning Type ▼

Fish Populations

Activity

Comparing Freshwater and Saltwater Fish Diversity

Research the estimated populations of freshwater fish and saltwater fish. Where do more fish live? What ecosystem is the most diverse? Create a graph using these data.

Science Seed

Saltwater and freshwater ecosystems cover more than 3/4 of the Earth’s surface and there are more than 33,000 identified species of fish across these ecosystems. Coral reefs have some of the highest biodiversity out of any ecosystem, but even though oceans are so much larger than Earth’s freshwater ecosystems, only 58% of all fish are saltwater species!

move to the next activity

earn Badges

Badges can be earned through hands-on experiences within each of the 16 branches of science, or “Science Slices.” You can earn a badge in each branch of science by doing four activities in these categories. We also encourage participants to keep a Nature Journal to record their memories, and to express themselves creatively through writing or drawing after each activity. We recommend that each child (and parent if they’d like) write or draw in a journal after each activity, with expectations of your children that match their age (the goal is self-expression, not perfection).

Explore Billy Reagan K-8 Education Center

join Families in Nature

It is our vision to inspire all families to fall in love with nature and foster the next generation of conservationists. Becoming a member of Families in Nature will give your family the opportunity to have adventures in nature, experience field science, develop as youth conservation leaders, and make memories that will last a lifetime. Memberships are free for everyone.

Who are we?

Families in Nature works to create opportunities for nature connection with the purpose of sparking a deep love and desire to protect, conserve and restore the environment. Our mission is to connect children and their families to nature and to each other through time spent learning, playing, and volunteering outdoors. It is our vision to inspire ALL families to fall in love with nature and foster the next generation of conservationists.

This project was made possible by HEB.