Although sea spiders are not true spiders, or even arachnids, their traditional classification as chelicerates would place them closer to true spiders than to other well-known arthropod groups, such as insects or crustaceans.
If you have an HDTV, we strongly recommend that you buy a Blu-ray player rather than a standard DVD player. Prices for Blu-ray players now start at less than $100, but expect to pay a bit more for a major-brand player that has 3D and wireless capbility.
Here's the best part. You don't need an expensive player. In fact, the easiest players to unlock are at the cheaper end. I bought a Phillips DVD player (DVP642) for $40 from BestBuy a few years ago, unlocked it in 10 seconds and watched a bunch of British comedy the same day.