/operations/:operation_id/custom?show_all=true             # shows all values of a particular operation
/operations/:operation_id/catches/:catch_id/specimen       # list all specimen values of a catch in an operation
/operations/:operation_id/catches                          # list all the catches of an operation
/operations/:operation_id/catches/:id                      # show the particular catch of an operation
/operations/:id                                            # show operation

/data/new