Season 4 aired between 23 Sep 2015 and 14 Jun 2016, 24 episodes.
Episodes
E01
The Walrus Pups
29 Sep 2015
E02
The Mantis Shrimp
30 Sep 2015
E03
The Poison Dart Frogs
23 Sep 2015
E04
The Hidden Lake
24 Sep 2015
E05
The Baby Sea Turtles
28 Sep 2015
E06
The Octopod Mystery
25 Sep 2015
E07
The Tree Lobsters
02 Oct 2015
E08
The Convict Fish
14 Dec 2015
E09
The Crawfish
22 Mar 2016
E10
The Surfing Snails
22 Mar 2016
E11
The Baby Gator
14 Mar 2016
E12
The Bomber Worms
14 Mar 2016
E13
The Flamingos
04 Apr 2016
E14
Operation Cooperation
04 Apr 2016
E15
The Kelp Monster Mystery
04 Jun 2016
E16
The Hippos
09 Jun 2016
E17
The Yellow-Bellied Sea Snakes
05 Jun 2016
E18
The Loneliest Whale
01 Oct 2015
E19
The Spinner Dolphins
13 Jun 2016
E20
The Coelacanth
07 Jun 2016
E21
The Emperor Penguins
16 Dec 2015
E22
The Tiger Shark
08 Jun 2016
E23
The Coconut Crisis
06 Jun 2016
E24
The Sunfish
14 Jun 2016