Huge beast, unaligned 
      
      Armor Class: 14 (Natural Armour)
      Hit Points: 85 (9D12+27)
      Speed: 
              30 ft
                                , swim: 50 ft
                        
 
      
      
      
                    Skills: Stealth +5
                                            Senses: Passive Perception: 10
                          Challenge Rating: 5
        ( 1800 XP)
                
                 
       
  
                
    
      Hold Breath
The Crocodile can hold its breath for 30 minutes. 
    
 
        Actions
    Multiattack
The Crocodile makes Two Attacks: One with its Bite and One with its Tail.
 
Bite
Melee Weapon Attack: +8 To Hit, Reach 5ft., One Target, Hit: 21 (3D10+5) Piercing Damage, and the target is Grappled (escape DC16). Until this grapple ends, the target is restrained, and the Crocodile can't bite another target.
 
Tail
Melee Weapon Attack: +8 To Hit, Reach 10ft., One Target not grappled by the Crocodile. Hit: 14 (2D8+5) Bludgeoning Damage. If the target is a creature, it must succeed on a DC16 Strength Saving Throw or be Knocked Prone.