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.
Windows Media Player can only play DVD's if you already have other software installed that can play DVD's. The easiest and cheapest solution to playing DVD's without buying extra software or trawling the internet for plugins is to download a free media player program called VLC (www.getvlc.com).