Then again, UPS has a trademark on the color brown and Harley has a trademark on the sound of their engines. Apparently you can trademark anything nowadays. I support you and the fact that they are being foolish. You can trademark anything. The difference is they have not trademarked the term but rather the logo. I wouldn’t be surprised if trademarking the logo would be in the works at this very moment. Personally I like the name Scuba Terra. They can also sue over enfringement because of the similarities. Surprisingly enough two logos being extremely similar marketing the same product can fall under copyright enfringement.