Not an Eel! That there is the best baits nature ever invented! Puget Sound Sandlance, AKA Candlefish. But I've never seen any even close to 20 inches long. Better have it mounted if you have really found one that large, and have it registered/certified on a scale, as it would likely make a State or World Record. Biggest I've ever seen was maybe 10 to 11 1/2 inches or so!

http://www.ecy.wa.gov/programs/sea/pugetsound/species/sandlance.html

Google Puget Sound Sandlance in Google images.

That is what the Original and Famous Point Wilson Dart is modeled after. When you see scratch marks all over the noses and faces of Blackmouth or Kings you know they've been rooting like pigs Sandlance from the bottom that have burrowed into the sand. Google Point Wilson Dart Candlefish.

Next post will likely be a scolding for giving away a bit to much info here! But maybe someone will return the favor when I need some info, I hope! Good fishing and tight lines to you all. G