ASCIIQuarium is an aquarium/sea animation in ASCII art created using perl. to install it just follow those steps :
Term::Animation
$ sudo apt-get install libcurses-perl
$ cd /tmp
$ wget http://search.cpan.org/CPAN/authors/id/K/KB/KBAUCOM/Term-Animation-2.4.tar.gz
$ tar -zxvf Term-Animation-2.4.tar.gz
$ cd Term-Animation-2.4/
$ perl Makefile.PL && make && make test
$ sudo make install
ASCIIQuarium
$ cd /tmp
$ wget http://www.robobunny.com/projects/asciiquarium/asciiquarium.tar.gz
$ tar -zxvf asciiquarium.tar.gz
$ cd asciiquarium_1.0/
$ sudo cp asciiquarium /usr/local/bin
$ chmod 0755 /usr/local/bin/asciiquarium
run it
$ /usr/local/bin/asciiquarium
or
perl /usr/local/bin/
