Friday roundup: Jet ski/submersible, smaller Ecotech Coral Glue, mainstream LED lights and Tony Vargas’s new book cover revealed

[youtube]http://www.youtube.com/watch?v=IMgRqxNqYD8[/youtube] For those of you with a a few extra bucks lying around and looking to play like a dolphin, the Seabreacher might just be for you. Although it does look like some sort of futuristic submarine, the Seabreacher is…