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.
It depends upon you DVD player. If you have simple DVD player then it will play mpeg2 format which are in the .vob files and ac3 which is audio format. It should also play the mpeg1 format which is usually in .dat or called video cds. The new DVD players also support xvid or divx codecs.