Underwater modular structure, module of or for said underwater modular structure and method of constructing an underwater modular structure

A module for an underwater modular structure comprising a plurality of mutually compatible modules wherein a labyrinth is at least in part defined by inner contours of the plurality of modules to force incoming water to pass through the labyrinth, wherein the module has an elongate form and comprises:

• connector insertion openings configured to receive a connector in the form of an elongate member therethrough, wherein:
• a connector insertion opening is arranged at each end of the module and equidistant along its sides;
• at least one of the connector insertion openings is inwardly tapered to define a guide for connector insertion into the module;
• and
• at least one of the connector insertion openings is outwardly protruding, wherein the inwardly tapered connector insertion opening and the outwardly protruding connector insertion opening are arranged on opposite sides of the module to mutually extend the guide defined by the inwardly protruding connector insertion opening to guide the connector out of the module;
• and
• a tortuous path in the form of tunnels further defining the labyrinth internal to the module comprising a plurality of interconnected inlets and outlets which comprise the connector insertion openings.