Hand paddles, everything.

People send paddles every day. The mails are full of them.

Some of you in this middle section you have red green paddles.

So here's RHex with paddles, now converted into an incredibly maneuverable swimming robot.

This is the boat that that lady was paddling around in, and this artisan makes the boat and the paddles and sells directly to the people who need the boat and the paddles.

They are mostly predatory, and have legs adapted as paddles to help the animal move through the water.