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How to tie a figure 8 knot

A figure 8 knot, also known as the Flemish knot, is a type of stopper knot that prevents line from being pulled out of a piece of equipment.

How to tie a barrel knot

A barrel knot is used as a stopper knot to prevent line from being pulled out of a piece of equipment.

Setting up a saltwater tank

Boothbay Sea and Science Instructors Olivia Harriman and Phoebe Churney walk us through the process of setting up a saltwater tank, including how to create artificial seawater and explaining why seawater is saltier on the bottom than on the surface.