I have made and sold a low cost hydrophone kit on eBay for years. It uses a toy Dollar store mic and amplifier to allow users to listen to underwater sounds. However, it will only go to about three feet deep and you can only listen with it and not record. Many people have asked if I had a hydrophone they could use with a digital recorder to record sounds so I came up with this design which allows you to inexpensively and easily record underwater sound to 25 feet deep. The raw materials cost me about $9. The links to the items on Amazon are here if you want to make one. Sanoxy 25 Feet 3.5 mm Stereo cable http://amzn.to/1LwLACK Neewer 3.5 mm mini Lapel microphone http://amzn.to/22tL6kS Olympus digital recorders http://amzn.to/2iulQKH If you want to see the old videos I made years ago on how to make a hydrophone with a dollar store mic and amplifier, go here. this video was shot with a cheap camera attached to my hat a long time ago pool leak detection How to Make Low Cost Hydrophone https://youtu.be/bNY2-gAfV0w this video below is how to make the same hydrophone but watch it only if you have a warped sense of humor pool leak detection HOW TO MAKE A LOW COST HYDROPHONE or HEAR WHALES https://youtu.be/4k7ExjpewyU thanks for watching, Robb Moffett Robb's homemade life ... https://www.youtube.com/watch?v=lHJxKGO3atc

This video is in two parts. The first few minutes go over the 4 main requirements of becoming an associate with Amazon to be able to use Amazon affiliate links in appropriate content. The rest of the video is an unscripted ramble of me talking about my experiences trying to learn how to write and sell over the years and where it has led me. I have included in the video a few tools and resources for beginner writers. These are things that I have benefited from and think worth sharing. I also explain as enthusiastically as I can why I think this is the best time in the history of the world for a person to be a writer. I want to start writing again. Below are links to some of the products or resources or services mentioned in the video that a beginner writer such as myself has found useful. The official Amazon page to provide the details on their affiliate program and where you can sign up to join https://affiliate-program.amazon.com/welcome hearre iss the beist free grammuar and speyll checkerr I have fouwund. ( :) just having some fun, calm down https://www.grammarly.com If you can not type well or have injuries to your hands, you may be interested in learning how to use Dragon. I have been able to obtain as high as 99% accuracy with my old 11.5 version but to be honest, I have not learned how to edit well with it yet. For high accuracy, it helps to have a good microphone but I have also had decent results with my Olympus recorder. This link is to amazon. I have found Amazon to often have lower prices than the official Nuance site which publishes Dragon. Check them both before making a purchase. Dragon Naturally Speaking http://amzn.to/2o5kd9n If you have no time to write, get a decent low-cost Olympus digital audio recorder which you can use on your daily commute and transcribe your dictation with Dragon. Digital audio recorder http://amzn.to/2ogDdUj Scrivener is an amazing and powerful program which does much more than organize your writing. Scrivener http://amzn.to/2nS8WZ1 Createspace will take your digital file of your book and create a hardcover for a very small sum with no minimum required. A truly amazing bargain. Anyone who sells their content on Kindle should also have a hardcopy for sale, if only to put on their own bookshelf. Createspace https://www.createspace.com/ If you need a word processing program and do not have Microsoft Word on your computer and do not want to pay for a program, the best free one available is the writer program included in the free officelibre. https://www.libreoffice.org/ I have a video playlist on writing and publishing that I like a lot. Several of the videos are by Joanna Penn. I can not recommend Ms.Penn's channel enough. She has many wonderful interviews of working authors that give freely ... https://www.youtube.com/watch?v=oMoi1dK65Dg