The two are ascidians, one colonial the other solitary. From where are they?

The left one, orange seems to be Botrylloides nigrum Herdman, 1886 which seems to be introduced in different parts of the world and may represent also a complex pf species.

The right one is more difficult to say.

Best,

Vinicius 

I concur that the left species belongs to Botryllidae and the right species is a solitary ascidian. As previously mentioned, identification is unlikely from a photograph. If possible, You should try to collect a specimen or two of each species. The following link will take you to instructions on how to preserve ascidians for identification. 

http://woodshole.er.usgs.gov/project-pages/stellwagen/didemnum/htm/page41.htm

Ascidiacea species are hard to identify in a picture.

I agree with the previous comments: left one is Botrylloides spp, maybe B. leachii. Right one is probably belonging to the Asciididae family, but hard to confirm without proper dissection.

Specimen collected from the tamilnadu coast