Message in a bottle animal delivery

Very few people actually bother with cargo runs yet after removing them from bottles you have now added them back in. We find tons of animal cages laying around islands, sometimes newbies will pick them up and grab an animal not realizing they have 0 value if youre not on a voyage for them. So why not give us some animal voyages in a bottle too? Maybe have them be restricted to only 1 type of animal as to not be a pain to complete if we wish to. This might make people want to actually grab all those loose cages we keep running into. Right now they are just pointless clutter on islands.