Carrier bays

Sometimes blimps or large bloons or something of the like can spawn with a Carrier bay, these allow for the blimp to create more bloons!

Certain bloons/blimps will have Carrier bays by default.

If the carrier bays weilder is infested the things it releases will either be infested themselves or it will release infest pods.

Carrier bay (CB)
Standard bays create simple bloons, a more powerful blimp will release more bloons and said bloons are more powerful. Regardless however, more bloons mean weaker individual bloons and the same goes for the reverse (Less bloons result in More powerful individual bloons)

Small/low class blimps (or simular things) will have 1 or 2 bays, if there's 1 it will almost always be on the front or back, if there are 2 there can be 1 on each side or 2 on the front/back.

Bigger and stronger blimps may have a fairly large amount of bays each producing many powerful bloons.

The type of bloons released can be specified.

Massive Carrier bay (MCB)
The Massive Carrier bays can create entire swarms of bloons at once, far less things will have one of these and it takes an incredibly large blimp to carry more than 1.

Small blimps will almost never have these, if they do it will usually be a smaller yet still threatning MCB.

Larger blimps if they do they will have only 1 of these and possibly a couple of regular CBs

Huge blimps can house 2 or even 3 MCBs

As with a standard CB, better bloons result in less bloons.

These are far more dangerous than even a decent group of standard CBs, these will give almost a constant stream of bloons, 2-3 at a time!

Blimp Carrier bay (BCB)
Some of the larger blimps out there may even carry a BCB, this allows for them to create more blimps to help with the task of flattening weaker defences.

You're equally as likely to encounter something with a BCB as you are with a MCB.

Huge blimps are capable of having a BCB AND a MCB.