Here's why:
* Tunicates are animals: They are marine invertebrates, meaning they lack a backbone.
* They resemble sea squirts and seaweeds: They have a sac-like body with two siphons, one for taking in water and the other for expelling it.
* Sea floor is a habitat: Tunicates, like many marine organisms, live on or near the sea floor.
Therefore, it's more accurate to say that Tunicates resemble other organisms that live on the seafloor, not the seafloor itself.
