The release is called "Deep Sea Friends" because all four of these mermaids come with their own ocean dwelling pal.
Now if we are very brave we will travel down to the deepest depths of the Marianas Trench where no natural light can be found. But what we can find there is Jewel Eboncave and her angler fish friend, Bobber. You see there is nothing to be afraid of in the dark when your best friend is also a constant night light. ;)