Nudibranchia (Predatory gastropods) preys on:
Brachiodontes exustus
Bivalvia
Crepidula fornicata
Crepidula convexa
Argopecten irradians
Chione cancellata
Acteon punctostriatus
Cadulus carolinesis
Swartziella catesbyana
Acetocina candei
Truncatella pulchella
Nassarius vibex
Olivella mutica
Haminoea succinea
Mangelia plicosa
Paralichthyes albigutta
Strongylura marina
Urophycis floridana
Prionotus scitulus
Prionotus tribulus
Anchoa mitchilli
Menidia beryllina
Leiostomus xanthurus
Laridae
Cyprinodon variegatus
Anatidae
Fundulus confluentus
Fundulus similis
Adinia xenica

Based on studies in:
USA: Florida (Estuarine)

This list may not be complete but is based on published studies.

Nudibranchia (Predatory gastropods) is prey of:
Urophycis floridana
Prionotus scitulus
Prionotus tribulus
sediment POC

Based on studies in:
USA: Florida (Estuarine)

This list may not be complete but is based on published studies.

Branches accommodate algae: sea slug
 

The gut of one sea slug accommodates the algae it farms for nutrition by branching into leaf-like tentacles for increased housing space.

   
  "One sea-slug common on the Great Barrier Reef in Australia has taken this practice even further. It is able to stimulate its captive algae so that they proliferate to an unusual degree. To accommodate the greater numbers produced in this way, it develops branches in its gut which extend into leaf-like tentacles along its flanks. Having stocked its tentacles with plants, the sea-slug moves away from the feeding grounds among the coral where it first acquired the algae. It seldom if ever feeds on coral again. It is sustained entirely, it seems, by its internal gardens." (Attenborough 1995:204-205)
  Learn more about this functional adaptation.