Download Guide
Purchase Game

Super Mario 3D All-Stars

Purchase on Amazon

Treasure of the Ocean Cave

Ben Chard
Jarrod Garripoli
, &
Seren Morgan-Roberts

At the beginning of the stage, jump into the water and head into the deep end. Dive down and look for the cave opening, which will be marked by a ring of coins. This will be your destination, so swim until you get out of the water in the cave. You won’t find much in this cave, but there is a Blue Coin Block here, so keep that in mind for the 100-coin star. There will also be pillars here that fall down whenever you get close, so be aware of getting smashed by one of them.

On the far end of the cave will be your goal, where you’re presented with another four chests. These are similar in nature to the ones found in [Plunder in the Sunken Ship], as you will need to open them in a set order. When looking at the chests with the rest of the cave behind you, open the chests in the following order:

(1 of 2) Be careful not to get hit by the falling pillars

Be careful not to get hit by the falling pillars (left), Open the chests in the correct order to spawn the star (right)

  • Back, left, right, front

Upon opening the final chest, you will get yourself another Power Star.


User profile pic
Welcome Guest

Guide Information

  • Publisher
  • Platforms,
  • Genre
    Action Adventure, Platformer
  • Guide Release
    24 September 2020
  • Last Updated
    8 February 2021
    Version History
  • Guide Author
    Seren Morgan-Roberts, Jarrod Garripoli, Ben Chard

Share this free guide:

This guide for Super Mario 3D All-Stars offers a walkthrough for all three Mario classics.

Inside this guide you will find:

A 100% Walkthrough - For Super Mario 64, Super Mario Sunshine and Super Mario Galaxy.

A complete guide on Super Mario 64, including:

  • A layout of Peach’s Castle, with each course’s location pinpointed, as well as an overview of each course.
  • Walkthroughs for every star, including all courses’ 100-coin star.
  • How to get each of the power-up caps.
  • The location of every single Secret Star found in Peach’s Castle.

A complete guide on Super Mario Galaxy, including:

  • A Dome Overviews page outlining every galaxy found in each Dome.
  • Walkthroughs for every star, including hidden stars and comet stars, found in each galaxy.
  • A guide on how to unlock the Planet of the Trials galaxies.
  • Detailed coin-by-coin walkthroughs of Purple Coin levels.

A complete guide on Super Mario Sunshine, including:

  • Walkthroughs for every shine in every episode.
  • How to find every Blue Coin.
  • Strategies on how to secure 100 Coins on every Course.

Get a Gamer Guides Premium account: