rel="nofollow" href="#ulink_3252627f-49db-5dbc-b153-43aa83157234">Figure 3.17)
a See Figure 3.17 for cross‐reference to arrangement patterns of deployed tentacles.
b The calculated space within the encounter zone occupied by tentacles
Figure 3.17 Patterns of tentacle deployment seen in medusae, siphonophores, and ctenophores. (a) Tentacles radiate from the body, filling a disk‐shaped space; (b) tentacles are somewhere within a sphere around the body; (c) tentacles stream behind the body, filling a truncated cone; (d) tentacles are held ahead of the body in a cylinder or truncated cone; (e) tentacles radiate from a long stem, filling a cylindrical space; (f) tentacles or tentilla form a nearly flat curtain. Some siphonophores may have encounter zones of this shape.
Source: Madin (1988), figure 1 (p. 416). Reproduced with the permission of the Bulletin of Marine Science.
Leptomedusae
Aequorea macrodactyla (Figure 3.17c) are large, lens‐shaped, medusae that swim nearly continuously, trailing the tentacles behind the bell to form a conical volume. Tentacles extend to about 50 times the bell diameter. Prey stick to the tentacles of the swimming medusa and are conveyed to the mouth. Like Stomotoca, the prey of Aequorea are largely gelatinous and include medusae, ctenophores, pteropods, and salps.
Laodicea undulata have a flat shape with large numbers
