Sea anemones that are attached to firm substrata can creep slowly on their pedal disks or detach altogether, often in response to unfavourable physical conditions or to attack by predators.
The focal contacts assembled by these cells allow firm adhesion onto the substratum but they are very stable (Chou et al., 2006; Calle et al., 2006b) and do not form and disassemble in coordination with the protrusion of the cell margin.
A substratum of superstition still remained.
Even here, though, abyssal tuba notes exposed a sonic substratum.
His most trivial stories have a substantial substratum of information.
This substratum of the homeless population has historically been overlooked.
The most interesting aspect of the "Notebooks" is not politics but its personal substratum.
His most trivial stories have substantial substratum of information.
The gametophore is often attached to the substratum by rhizoids.
The plants are often flattened horizontal to the substratum.
